3D Puzzle Interlock Clue:
Located in Period 6, Group 11 (Coinage Metals). Sits directly beneath Silver (Ag) and Copper (Cu). Matches heavy yellow puzzle tile notched for 79 protons.
💡 Wild Fact: All gold ever mined in human history would fit into a single cube measuring just 22 meters on each side!
Density: 19.3 g/cm³ Valence: +1, +3
CARD 01 • BACK Carbon (C) • Z = 6
👅 Can You Lick It? The Verdict:
YES, CONTINUOUSLY! Roughly 18.5% of your body mass is carbon. When bonded with hydrogen and oxygen, it makes glucose, starch, and chocolate. Licking pure graphite leaves pencil marks; licking diamond just feels cold!
3D Puzzle Interlock Clue:
Period 2, Group 14. Quad-covalent hub! Tile has 4 side interlocks representing its 4 valence electrons that bond with nearly everything.
💡 Wild Fact: The exact same carbon atoms form both soft slippery pencil graphite and ultra-hard sparkling diamonds!
Forms > 10 Million Compounds Sublimation: 3642°C
CARD 04 • BACK Helium (He) • Z = 2
👅 Can You Lick It? The Verdict:
PHYSICALLY IMPOSSIBLE! Helium is a room-temperature gas that has no taste or smell. Inhaling it makes sound travel 3× faster through vocal cords (high pitch), but inhaling pure gas starves your brain of oxygen!
3D Puzzle Interlock Clue:
Top right corner of the periodic table! Period 1, Group 18. Completely flat non-bonding outer perimeter tile representing zero valence reactivity.
💡 Wild Fact: Helium was discovered on the Sun before Earth, detected by analyzing solar eclipse light spectrums in 1868!
Boiling Pt: -268.9°C (4K) Superfluid at low temp
CARD 03 • BACK Iron (Fe) • Z = 26
👅 Can You Lick It? The Verdict:
YES, BUT WATCH OUT IN WINTER! Licking room-temperature cast iron tastes metallic because skin lipids break down on contact. In sub-zero weather, moisture freezes instantly and glues your tongue to the post!
3D Puzzle Interlock Clue:
Period 4, Group 8. Center of the transition metal block. Tile features magnetic alignment notches that mate with Cobalt (Co) and Nickel (Ni).
💡 Wild Fact: The red color of your blood and the red surface of Mars are caused by the exact same thing: oxidized iron rust!
Earth's Core is 85% Iron Melting Pt: 1538°C
CARD 06 • BACK Sodium (Na) • Z = 11
👅 Can You Lick It? The Verdict:
CATASTROPHIC NO! 2Na + 2H₂O → 2NaOH + H₂ + Heat. Pure sodium violently strips oxygen-hydrogen from water, producing flammable hydrogen gas and sodium hydroxide (drain cleaner lye) that burns through tongue tissue!
3D Puzzle Interlock Clue:
Period 3, Group 1 (Alkali Metals). Tile has a single protruding male peg representing its single desperate-to-escape valence electron!
💡 Wild Fact: Mix deadly explosive sodium with poisonous chlorine gas and you get ordinary, delicious table salt (NaCl)!
Latin: Natrium Stored submerged in mineral oil
CARD 05 • BACK Gallium (Ga) • Z = 31
👅 Can You Lick It? The Verdict:
BAD IDEA! Body temperature is ~37°C, well above gallium's 29.7°C melting point. It liquefies into sticky gray sludge. While not acutely toxic like mercury, it stains teeth black and binds to aluminum fillings!
3D Puzzle Interlock Clue:
Period 4, Group 13 (Boron Family). Sits directly under Aluminum (Al). Tile has 3 interlocking pegs matching Group 13 geometry.
💡 Wild Fact: The classic magician prank "disappearing spoon" is made of cast gallium that melts when stirred in hot tea!
Expands when freezing (3.1%) Forms gallium alloys
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
3D Periodic Puzzle Companion • Front Faces (Set 2 of 2)
Page 3 • Fronts (Cards 07–12)
Cut along dashed lines • Flip long edge for backs
#17 35.45 u
Tile P3 • G17
Cl Chlorine Reactive Halogen
Bleach & Pool Yellow-Green Gas
⚠️ Rating: DISSOLVES TONGUE Tier 3
Gas reacts with saliva water to form hydrochloric (HCl) and hypochlorous acid!
Card 07 • Front 7 Valence Electrons (Needs 1)
#9 18.998 u
Tile P2 • G17
F Fluorine Hyper-Halogen
Ignites Concrete Pale Yellow Gas
💥 Rating: TOTAL ANNIHILATION Tier 4
Most electronegative element on Earth! It sets water on fire and eats through glass.
Card 08 • Front Electronegativity: 3.98 (Max)
#80 200.59 u
Tile P6 • G12
Hg Mercury Transition Metal
Liquid Quicksilver Liquid @ 20°C
☠️ Rating: TOXIC BRAIN POISON Tier 4
Potent cumulative neurotoxin! Vapors absorb through lungs and mouth to destroy brain cells.
Card 09 • Front Latin: Hydrargyrum (Water Silver)
#82 207.2 u
Tile P6 • G14
Pb Lead Post-Transition Metal
Heavy Shielding Dense Solid @ 20°C
☠️ Rating: SWEET TASTING DOOM Tier 4
Lead salts taste dangerously sweet! Chronic lead poisoning causes severe neurological damage.
Card 10 • Front Latin: Plumbum (Source of Plumbing)
#33 74.922 u
Tile P4 • G15
As Arsenic Toxic Metalloid
Heir's Powder Brittle Gray Solid
☠️ Rating: FAMOUS ASSASSIN Tier 4
Odorless and virtually tasteless when dissolved. Disrupts ATP cellular energy production!
Card 11 • Front Historic Victorian "Green Wallpaper" Pigment
#92 238.03 u
Tile Actinide Strip
U Uranium Actinide Heavy Metal
Radioactive Fuel Dense Silvery Metal
☢️ Rating: SPICY FORBIDDEN GLOW Tier 5
Emits ionizing alpha particles. Ingesting it irradiates internal tissues and triggers kidney failure!
Card 12 • Front Nuclear Fuel • Half-Life: 4.5B Years
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Front ↔ Col 2 Back
3D Periodic Puzzle Companion • Dossier & Clues (Set 2 of 2)
Page 4 • Backs (Cards 07–12 Mirrored)
Aligns to Page 3 when printed double-sided
CARD 08 • BACK Fluorine (F) • Z = 9
👅 Can You Lick It? The Verdict:
INSTANT MEDICAL EMERGENCY! Elemental fluorine (\(F_2\)) is the most aggressively reactive element in existence. It rips electrons from water in your saliva, generating fatal amounts of hydrofluoric acid and fiery ozone!
3D Puzzle Interlock Clue:
Period 2, Group 17 (Halogens). Positioned top-right directly beside Oxygen and Neon. Tile has a deep receiver socket waiting to steal 1 electron.
💡 Wild Fact: While pure fluorine is terrifying, bonded fluoride (\(F^-\)) in toothpaste forms fluorapatite to reinforce dental enamel against acid!
Reacts with noble gases Xe and Kr Boiling Pt: -188.1°C
CARD 07 • BACK Chlorine (Cl) • Z = 17
👅 Can You Lick It? The Verdict:
DO NOT LICK! Pure chlorine gas dissolves into wet mucus and saliva, converting instantly into hydrochloric acid (\(HCl\)). It burns eyes, lungs, and tongue tissues. Swimming pools use safe, parts-per-million diluted solutions!
3D Puzzle Interlock Clue:
Period 3, Group 17. Sits directly under Fluorine and to the right of Sulfur. Its single docking notch snaps snugly into Alkali Metal peg tiles like Sodium.
💡 Wild Fact: Carl Wilhelm Scheele discovered chlorine in 1774, mistakenly believing it was a compound because it bleached organic leaves snow-white!
Density: 3.2 g/L (heavier than air) Greek: Chloros (Pale Green)
CARD 10 • BACK Lead (Pb) • Z = 82
👅 Can You Lick It? The Verdict:
NEVER! (EVEN IF IT TASTES SWEET) Ancient Romans used "sugar of lead" (lead acetate) to sweeten sour wines. Lead mimics calcium, crosses into bone marrow, and permanently damages developing brains and nerves.
3D Puzzle Interlock Clue:
Period 6, Group 14 (Carbon Group). Sits beneath Tin (Sn). In the 3D puzzle, this is the heaviest stable element tile; all elements above 82 are radioactive!
💡 Wild Fact: Pencil "leads" never contained actual lead; they have always been harmless carbon graphite mixed with clay!
Density: 11.34 g/cm³ Shields X-rays and Gamma Rays
CARD 09 • BACK Mercury (Hg) • Z = 80
👅 Can You Lick It? The Verdict:
DO NOT TOUCH OR LICK! Elemental mercury evaporates at room temperature. Inhaled or ingested vapors bind strongly to sulfur in enzymes, destroying brain tissue and kidney function. Hatmakers went mad from mercury felt curing!
3D Puzzle Interlock Clue:
Period 6, Group 12. Sits between Gold (Au) and Thallium (Tl). Its puzzle tile has a distinct fluid-droplet debossed icon indicating it is the only liquid metal at standard temp!
💡 Wild Fact: Mercury is so dense that solid iron cannonballs and lead ingots easily float on top of a pool of liquid mercury!
Freezing Pt: -38.8°C Density: 13.53 g/cm³
CARD 12 • BACK Uranium (U) • Z = 92
👅 Can You Lick It? The Verdict:
LICKING IS ILL-ADVISED AND DANGEROUS! Beyond heavy metal kidney toxicity, ingested uranium bombards stomach lining with high-energy alpha particles, shattering DNA bonds. (Though touching uranium glassware with unbroken skin is low risk!)
3D Puzzle Interlock Clue:
Actinide Series (f-block). Belongs in the separate lower pull-out drawer of the 3D puzzle table. Connects directly between Protactinium (Pa) and Neptunium (Np).
💡 Wild Fact: Vintage "Vaseline glass" from the early 1900s contains ~2% uranium and glows intense neon green under ultraviolet blacklight!
Density: 19.1 g/cm³ Fissionable Isotope: U-235
CARD 11 • BACK Arsenic (As) • Z = 33
👅 Can You Lick It? The Verdict:
DO NOT LICK! Ingesting white arsenic (\(As_2O_3\)) causes severe gastrointestinal agony, vomiting, and multi-organ failure. Because it was historically undetectable in food, it earned the dark nickname "Inheritance Powder."
3D Puzzle Interlock Clue:
Period 4, Group 15 (Pnictogens). Sits between Germanium (Ge) and Selenium (Se). Its diagonal stair-step metalloid ridge marks the boundary between metals and nonmetals.
💡 Wild Fact: The Marsh test, invented in 1836, used zinc and acid to turn arsenic into visible metallic mirrors, ending its reign as the "undetectable" poison!
Sublimes at 614°C Semiconductor Dopant
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
👅 Can You Lick It? The Verdict:
YES, WITH ZERO HARM! Titanium forms an instant passive oxide layer (\(TiO_2\)) that prevents any corrosion by body fluids. That is why surgeons use titanium for hip joints, skull plates, and tooth implants!
3D Puzzle Interlock Clue:
Period 4, Group 4. Sits between Scandium (Sc) and Vanadium (V). The 3D puzzle tile features high-strength structural grooves matching transition metal frame slots.
💡 Wild Fact: Titanium is as strong as steel but 45% lighter, and it never rusts even after years in saltwater!
Melting Pt: 1668°C Density: 4.5 g/cm³
CARD 13 • BACK Oxygen (O) • Z = 8
👅 Can You Lick It? The Verdict:
BREATHE IT, DON'T CHILL IT! Diatomic gas (\(O_2\)) is essential for cellular respiration. However, liquid oxygen is pale blue, paramagnetic, and at -183°C will flash-freeze and severely burn your mouth!
3D Puzzle Interlock Clue:
Period 2, Group 16 (Chalcogens). Positioned between Nitrogen and Fluorine. Tile has two dual-bonding receptor slots representing its valence requirements.
💡 Wild Fact: Liquid oxygen sticks to powerful magnets! You can suspend a droplet of liquid oxygen in mid-air between two neodymium magnets.
Boiling Pt: -182.9°C Electronegativity: 3.44
CARD 16 • BACK Nitrogen (N) • Z = 7
👅 Can You Lick It? The Verdict:
GASEOUS: YES / CRYOGENIC: DISASTER! Air is mostly \(N_2\). But liquid nitrogen at -196°C freezes organic cells instantly. Attempting to lick liquid nitrogen produces extreme thermal shock and tissue detachment!
3D Puzzle Interlock Clue:
Period 2, Group 15. Sits right next to Carbon and Oxygen. Tile features 3 connection points representing the tough triple covalent bond of \(N_2\).
💡 Wild Fact: Potato chip bags are pumped full of pure nitrogen gas instead of air to cushion chips and keep them crispy and un-oxidized!
Boiling Pt: -195.8°C Forms amino acid building blocks
CARD 15 • BACK Potassium (K) • Z = 19
👅 Can You Lick It? The Verdict:
EXPLOSIVE NO! 2K + 2H₂O → 2KOH + H₂. Potassium reacts even more vigorously than sodium! It instantly produces boiling caustic potassium hydroxide and ignites the generated hydrogen gas in a brilliant lilac-purple fireball!
3D Puzzle Interlock Clue:
Period 4, Group 1. Leftmost column directly below Sodium (Na). Single male peg extends outward, matching the lone, highly reactive outer valence electron.
💡 Wild Fact: Bananas are slightly radioactive because ~0.012% of all natural potassium is the radioactive isotope Potassium-40 (K-40)!
Density: 0.89 g/cm³ (Floats on water) Melts at 63.5°C
CARD 18 • BACK Calcium (Ca) • Z = 20
👅 Can You Lick It? The Verdict:
BONE MINERAL YES, METAL NO! You need calcium ions (\(Ca^{2+}\)) for nerve signals and teeth. But pure metallic calcium reacts with water to generate heat and caustic calcium hydroxide (\(Ca(OH)_2\)), scorching your tongue.
3D Puzzle Interlock Clue:
Period 4, Group 2 (Alkaline Earths). Interlocks directly between Potassium (K) and Scandium (Sc). Features two peg tabs for its 2 valence electrons.
💡 Wild Fact: Chalk, marble, limestone, eggshells, and sea pearls are all made of the exact same compound: calcium carbonate (\(CaCO_3\))!
Melting Pt: 842°C 5th most abundant element in crust
CARD 17 • BACK Silver (Ag) • Z = 47
👅 Can You Lick It? The Verdict:
SAFE ON FLATWARE! Silver has natural oligodynamic antimicrobial properties. However, consuming large quantities of silver causes Argyria, a permanent condition where silver deposits in skin cells turn you smurf-blue in sunlight!
3D Puzzle Interlock Clue:
Period 5, Group 11 (Coinage Metals). Sits directly above Gold (Au) and below Copper (Cu). Tile has mirror-finished metallic embossing.
💡 Wild Fact: Early American pioneers dropped silver coins into milk jugs to slow down spoiling because silver kills bacteria!
Reflects 95% of visible light Melting Pt: 961.8°C
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
3D Periodic Puzzle Companion • Front Faces (Set 4 of 4)
Page 3 • Fronts (Cards 19–24)
Cut along dashed lines • Flip long edge for backs
#15 30.974 u
Tile P3 • G15
P Phosphorus Pnictogen Nonmetal
Matchbox Flame Waxy / Red Solid
💥 SPONTANEOUS COMBUSTION Tier 3
White phosphorus ignites in air at body temperature! Caused "phossy jaw" necrosis in history.
Card 19 • Front Greek: Phosphoros (Light Bearer)
#83 208.98 u
Tile P6 • G15
Bi Bismuth Post-Transition Metal
Pepto-Bismol Rainbow Crystal
👅 SOOTHES UPSET STOMACH Tier 1
Surprise heavy metal that is non-toxic! Active ingredient in pink indigestion remedies.
Card 20 • Front Forms stepped spiral hopper crystals
#35 79.904 u
Tile P4 • G17
Br Bromine Fuming Halogen
Red Fuming Liquid Liquid @ 20°C
☠️ CORROSIVE CHEMICAL BURN Tier 4
One of only 2 liquid elements! Vapors attack mucous membranes and peel skin down to bone.
Card 21 • Front Greek: Bromos (Stench) • Flame retardant
#55 132.91 u
Tile P6 • G1
Cs Cesium Hyper-Alkali Metal
Super-Detonation Melts @ 28.5°C
💥 INSTANT MOUTH DETONATION Tier 5
Reacts explosively with cold water and ice! Saliva contact shatters glass and causes severe shock waves.
Card 22 • Front Defines the official SI Second (Atomic Clocks)
#88 226.03 u
Tile P7 • G2
Ra Radium Radioactive Metal
Radium Girls Dial Radioluminescent
☢️ TRAGIC FORBIDDEN GLOW Tier 5
1920s watch dial painters licked brushes with radium; it replaces calcium in bone and destroys jaws.
Card 23 • Front Discovered by Marie & Pierre Curie (1898)
#84 209 u
Tile P6 • G16
Po Polonium Radioactive Metalloid
Alpha Emitter Heats Itself to 500°C
☢️ 250,000× CYANIDE TOXICITY Tier 5
A single microgram ingested destroys stem cells in bone marrow and causes lethal radiation poisoning.
Card 24 • Front Named after Poland by Marie Curie
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Front ↔ Col 2 Back
3D Periodic Puzzle Companion • Dossier & Clues (Set 4 of 4)
Page 4 • Backs (Cards 19–24 Mirrored)
Aligns to Page 3 when printed double-sided
CARD 20 • BACK Bismuth (Bi) • Z = 83
👅 Can You Lick It? The Verdict:
YES, IN MEDICINE! Unlike its toxic neighbors Lead (\(Pb\)) and Thallium (\(Tl\)), bismuth compounds like bismuth subsalicylate (\(C_7H_5BiO_4\)) coat stomach walls and soothe heartburn without heavy metal poisoning!
3D Puzzle Interlock Clue:
Period 6, Group 15. Sits right beside Lead. Puzzle tile features an iridescent stair-step terraced edge modeling its hopper crystallization patterns.
💡 Wild Fact: The stunning rainbow colors of bismuth crystals come from light wave interference on a microscopic surface oxide layer!
Half-life: 1.9 × 10¹⁹ years Expands 3.32% upon solidifying
CARD 19 • BACK Phosphorus (P) • Z = 15
👅 Can You Lick It? The Verdict:
WHITE: DEADLY FIRE / PHOSPHATES: VITAL! White phosphorus (\(P_4\)) spontaneously ignites at 30°C and causes catastrophic burns. Red phosphorus on safety match strike pads is stable. Your DNA backbone is made of phosphate!
3D Puzzle Interlock Clue:
Period 3, Group 15. Sits right below Nitrogen (N) and above Arsenic (As). Tile has 3 covalent connector notches with a phosphorous glow pigment.
💡 Wild Fact: Hennig Brand discovered phosphorus in 1669 while boiling down thousands of liters of urine trying to synthesize gold!
Allotropes: White, Red, Black, Violet Forms ATP cellular energy
CARD 22 • BACK Cesium (Cs) • Z = 55
👅 Can You Lick It? The Verdict:
VIOLENT INSTANT DISASTER! 2Cs + 2H₂O → 2CsOH + H₂. Cesium is the most reactive alkali metal available in quantity. It generates instantaneous explosive shockwaves upon touching moisture, shattering glass and severing tissue!
3D Puzzle Interlock Clue:
Period 6, Group 1. Sits between Rubidium (Rb) and radioactive Francium (Fr). Giant oversized perimeter puzzle tab representing its enormous atomic radius.
💡 Wild Fact: Exactly 9,192,631,770 microwave oscillations of a Cesium-133 atom defines the standard length of 1 second in time worldwide!
Liquid on a warm summer day Stored in evacuated glass ampoules
CARD 21 • BACK Bromine (Br) • Z = 35
👅 Can You Lick It? The Verdict:
EXTREME AGONY! Liquid bromine evaporates into heavy choking reddish-brown fumes that react with moisture to form hydrobromic acid (\(HBr\)). Ingestion destroys esophageal and oral tissues, causing lethal caustic burns.
3D Puzzle Interlock Clue:
Period 4, Group 17 (Halogens). Sits between Chlorine (Cl) and Iodine (I). Puzzle tile has liquid bead contouring and halogen latch slots.
💡 Wild Fact: The royal purple dye "Tyrian purple", worn by ancient Roman emperors, was harvested from sea snails rich in organobromine compounds!
Density: 3.1 g/cm³ (Heavy liquid) Boiling Pt: 58.8°C
CARD 24 • BACK Polonium (Po) • Z = 84
👅 Can You Lick It? The Verdict:
LETHAL AT MOLECULAR LEVELS! Polonium-210 releases massive streams of ionizing alpha radiation. A dose as small as 1 microgram (smaller than a dust grain) swallowed into the body destroys liver, spleen, and bone marrow cells.
3D Puzzle Interlock Clue:
Period 6, Group 16. Located directly below Tellurium (Te) and to the right of Bismuth (Bi). Puzzle tile has raised radiation hazard ridges and hot-glow embossing.
💡 Wild Fact: Polonium produces so much internal heat from alpha decay that a half-gram capsule spontaneously glows cherry-red and heats to 500°C!
Half-life: 138.4 days (Po-210) Alpha energy: 5.3 MeV
CARD 23 • BACK Radium (Ra) • Z = 88
👅 Can You Lick It? The Verdict:
HISTORIC RADIUM TRAGEDY! In the 1920s, dial painters were told to "lip-point" their paintbrushes with radium paint. Because radium mimics calcium, the body incorporated it directly into bones, causing catastrophic radiation necrosis!
3D Puzzle Interlock Clue:
Period 7, Group 2 (Alkaline Earths). Sits directly beneath Barium (Ba). Its 3D puzzle tile is cast with phosphorescent green luminescent edge tabs.
💡 Wild Fact: Marie Curie's original laboratory notebooks from the 1890s are still so radioactive with radium that they must be stored in lead boxes!
Half-life: 1,600 years (Ra-226) Decays into radon gas
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
CARD 26 • BACK Lithium (Li) • Z = 3
👅 Can You Lick It? The Verdict:
DO NOT LICK METALLIC LITHIUM! It reacts exothermically with saliva moisture to produce corrosive lithium hydroxide (\(LiOH\)). In trace medical salt forms (\(Li_2CO_3\)), it calms neurological mania, but metallic lithium burns tongues!
3D Puzzle Interlock Clue:
Period 2, Group 1. Sits directly under Hydrogen (H) and above Sodium (Na). Lightest solid element tile in the entire puzzle kit!
💡 Wild Fact: The original recipe for the soda 7-Up contained lithium citrate as a mood-enhancing hangover cure until 1948!
Melts at 180.5°C Crimson flame color
CARD 25 • BACK Hydrogen (H) • Z = 1
👅 Can You Lick It? The Verdict:
BONDED: ALL DAY / PURE GAS: EXPLOSIVE! Bonded to oxygen in \(H_2O\), you drink it daily. Pure \(H_2\) gas has no flavor, but mixed with air, a single electrostatic spark ignites a devastating shockwave!
3D Puzzle Interlock Clue:
Corner tile #1! Top-left starting tile of the entire periodic puzzle. Features a single proton peg with one orbiting electron slot.
💡 Wild Fact: The Jupiter planet core is compressed under so much gravity that hydrogen acts like a glowing liquid metal!
Boiling Pt: -252.9°C 1 proton, 0 neutrons (Protium)
CARD 28 • BACK Silicon (Si) • Z = 14
👅 Can You Lick It? The Verdict:
SAFE AND INERT! Elemental silicon forms a microscopic non-reactive silica boundary. Licking a silicon wafer tastes just like clean window glass. It passes right through the digestive tract with zero biological reactivity!
3D Puzzle Interlock Clue:
Period 3, Group 14. Located directly below Carbon (C) and above Germanium (Ge). Shares carbon's 4 valence peg slots but with larger atomic spacing.
💡 Wild Fact: Silicon makes up nearly 28% of the entire Earth's crust; only oxygen is more abundant in rocks and dirt!
Melting Pt: 1414°C Purified to 99.9999999% for chips
CARD 27 • BACK Beryllium (Be) • Z = 4
👅 Can You Lick It? The Verdict:
DEADLY DECEPTIVE SWEETNESS! Early chemists tasted beryllium salts and called them sweet. But beryllium triggers an incurable allergic immune destruction of lung tissue known as Chronic Beryllium Disease (CBD)!
3D Puzzle Interlock Clue:
Period 2, Group 2. First member of the Alkaline Earth metal column. Sits directly above Magnesium (Mg) and left of Boron (B).
💡 Wild Fact: The 18 giant gold-plated hexagonal mirrors of the James Webb Space Telescope are crafted from pure lightweight beryllium!
Density: 1.85 g/cm³ Transparent to X-rays
CARD 30 • BACK Copper (Cu) • Z = 29
👅 Can You Lick It? The Verdict:
YES, BUT TASTES BITTER! In contact with skin oils, copper produces odoriferous 1-octen-3-one ("metallic smell"). Copper surfaces kill 99.9% of bacteria and superbugs within 2 hours through contact killing!
3D Puzzle Interlock Clue:
Period 4, Group 11. Sits between Nickel (Ni) and Zinc (Zn), directly above Silver (Ag). Tile features copper foil finish and dual conductivity pins.
💡 Wild Fact: The Statue of Liberty is made from 80 tons of copper; it was originally bright shiny penny-brown before oxidizing green!
Melting Pt: 1084.6°C Horseshoe crab blood uses copper
CARD 29 • BACK Sulfur (S) • Z = 16
👅 Can You Lick It? The Verdict:
NOT HARMFUL, BUT GROSS! Elemental sulfur crystals (\(S_8\)) are insoluble in water and nearly tasteless. But burning sulfur produces sulfur dioxide (\(SO_2\)), which turns into sulfuric acid on wet mucous membranes!
3D Puzzle Interlock Clue:
Period 3, Group 16. Located right below Oxygen (O) and beside Phosphorus (P). Distinct yellow textured tile with crown-ring interlocking tabs.
💡 Wild Fact: The awful stench of skunk spray and chopped onions comes from sulfur-containing organic molecules called thiols!
Melting Pt: 115.2°C Creates crosslinks in rubber tires
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
3D Periodic Puzzle Companion • Front Faces (Set 6 of 6)
Page 3 • Fronts (Cards 31–36)
Cut along dashed lines • Flip long edge for backs
#30 65.38 u
Tile P4 • G12
Zn Zinc Immunity Guardian
Sunscreen & Cold Bluish-White Metal
👅 VITAL IN COLD LOZENGES Tier 1
Essential enzyme cofactor! Used in cold lozenges and white sunscreen lotion (\(ZnO\)).
Card 31 • Front Galvanizes steel buckets against corrosion
#53 126.90 u
Tile P5 • G17
I Iodine Violet Halogen
Thyroid Shield Sublimes into Violet Gas
⚠️ SALT YES, PURE NO Tier 2
Iodized table salt prevents thyroid goiters; but licking pure elemental crystal burns mouth tissue!
Card 32 • Front Greek: Ioeides (Violet-colored)
#54 131.29 u
Tile P5 • G18
Xe Xenon Heavy Noble Gas
Ion Space Drive 5× Denser than Air
⚠️ DEMONIC DEEP VOICE GAS Tier 2
Opposite of helium! Inhaling drops voice to super-low bass, but acts as a heavy anesthetic!
Card 33 • Front Powers Starlink satellite ion thrusters
#74 183.84 u
Tile P6 • G6
W Tungsten Ultra-Heat Champion
Bulb Filament Melts @ 3422°C
👅 INDESTRUCTIBLE & SAFE Tier 1
Survives extreme heat that vaporizes other metals. Tastes like clean heavy steel; non-toxic!
Card 34 • Front Symbol W comes from Wolframite mineral
#81 204.38 u
Tile P6 • G13
Tl Thallium The Poisoner's Poison
Alopecia Poison Soft Gray Metal
☠️ TASTELESS DEADLY TRAP Tier 4
Completely odorless and flavorless! Mimics potassium to enter cells, causing total hair loss and paralysis.
Card 35 • Front Banned worldwide in rodent poisons
#94 244 u
Tile Actinide Drawer
Pu Plutonium Self-Warming Metal
Voyager RTG Battery Warm Heavy Solid
☢️ NUCLEAR CELL DESTROYER Tier 5
Radioactive alpha decay makes it physically warm to touch! Microscopic dust causes fatal bone cancer.
Card 36 • Front Named after dwarf planet Pluto
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Front ↔ Col 2 Back
3D Periodic Puzzle Companion • Dossier & Clues (Set 6 of 6)
Page 4 • Backs (Cards 31–36 Mirrored)
Aligns to Page 3 when printed double-sided
CARD 32 • BACK Iodine (I) • Z = 53
👅 Can You Lick It? The Verdict:
SALT FORM: ESSENTIAL / PURE: CORROSIVE! Potassium iodide (\(KI\)) in iodized salt protects your thyroid gland. But solid crystalline iodine sublimes into choking purple vapor that stains skin yellow-brown and erodes oral membranes!
3D Puzzle Interlock Clue:
Period 5, Group 17 (Halogens). Sits between Bromine (Br) and Astatine (At). Distinct violet-tinted puzzle tile with halogen receptor notches.
💡 Wild Fact: Drops of iodine turn dark ink-blue when added to starch, making it a classic science detector for potato and bread carbs!
Sublimes at 184.3°C Heavy halogen solid
CARD 31 • BACK Zinc (Zn) • Z = 30
👅 Can You Lick It? The Verdict:
HEALTHY IN SMALL DOSES! Your immune system uses zinc to fight off viruses. Cold lozenges release zinc ions (\(Zn^{2+}\)) that shorten common colds. Excessive zinc can cause stomach upset, but metallic zinc is safe!
3D Puzzle Interlock Clue:
Period 4, Group 12. Marks the right edge of the 3d transition metal block. Sits right beside Copper (Cu) and directly under Cadmium (Cd).
💡 Wild Fact: US pennies minted since 1982 are actually 97.5% cheap solid zinc coated with an ultra-thin skin of pure copper!
Melting Pt: 419.5°C Boiling Pt: 907°C
CARD 34 • BACK Tungsten (W) • Z = 74
👅 Can You Lick It? The Verdict:
COMPLETELY SAFE! Tungsten is one of the densest and most chemically resistant metals known. It does not react with saliva or digestive acids. It has virtually identical density to gold (19.3 g/cm³) but is intensely hard!
3D Puzzle Interlock Clue:
Period 6, Group 6. Sits directly below Molybdenum (Mo) and above Seaborgium (Sg). Solid heavyweight puzzle tile designed to anchor the central d-block.
💡 Wild Fact: Tungsten has the highest tensile strength of any pure metal; at 3422°C, its melting point exceeds the boiling point of copper!
Density: 19.25 g/cm³ Boiling Pt: 5930°C (Surface of Sun)
CARD 33 • BACK Xenon (Xe) • Z = 54
👅 Can You Lick It? The Verdict:
ODORLESS GAS / GENERAL ANESTHETIC! Xenon gas does not react with tongue saliva. However, inhaling it slows sound waves dramatically, turning your voice into a deep growl while putting you into surgical anesthesia!
3D Puzzle Interlock Clue:
Period 5, Group 18. Noble gas column. Puzzle tile has a sleek smooth outer right edge indicating its full octet and lack of valence bonding links.
💡 Wild Fact: Xenon is so dense that lightweight boats made of aluminum foil can float across a tank filled with invisible xenon gas!
Density: 5.89 g/L (Gas) Boiling Pt: -108.1°C
CARD 36 • BACK Plutonium (Pu) • Z = 94
👅 Can You Lick It? The Verdict:
EXTREME DEADLY RADIATION! Plutonium radiates intense alpha decay. Ingested into the mouth, it concentrates in bone surfaces and liver, causing massive localized cellular DNA destruction and aggressive cancers!
3D Puzzle Interlock Clue:
Actinide series (f-block). Belongs in the pull-out tray beside Neptunium (Np) and Americium (Am). Tile is debossed with an atomic core symbol.
💡 Wild Fact: The Mars Curiosity and Perseverance rovers are powered by heat generated from decaying Plutonium-238 pellets!
Density: 19.8 g/cm³ Half-life: 24,110 years (Pu-239)
CARD 35 • BACK Thallium (Tl) • Z = 81
👅 Can You Lick It? The Verdict:
LETHAL AND TASTELESS! Because \(Tl^+\) has nearly the identical ionic radius as potassium (\(K^+\)), your body mistakenly pumps it through cell membranes, inhibiting essential ATP energy and shutting down nerve signaling!
3D Puzzle Interlock Clue:
Period 6, Group 13. Sits right beside Mercury (Hg) and Lead (Pb). In the 3D puzzle, this is the center tile of the infamous "Toxic Heavy Metal Alley".
💡 Wild Fact: Agatha Christie used thallium poisoning in her 1961 mystery novel *The Pale Horse*, helping doctors later solve real-life poison cases!
Melting Pt: 304°C Greek: Thallos (Green Shoot/Twig)
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
Aligns to Page 1 when printed double-sided
CARD 38 • BACK Americium (Am) • Z = 95
👅 Can You Lick It? The Verdict:
DO NOT PRY OPEN DETECTORS! Smoke detectors contain ~0.29 micrograms of \(^{241}AmO_2\). Its alpha particles ionize chamber air to sense smoke. Ingesting this button deposits radioactive americium in bones for decades!
3D Puzzle Interlock Clue:
Actinide series (f-block). Sits right beside Plutonium (Pu) and Curium (Cm). Puzzle tile has caution hazard cross-hatching molded into the border.
💡 Wild Fact: In 1994, a teenager famously collected hundreds of smoke alarms to harvest americium to try building a backyard nuclear reactor!
Half-life: 432.2 years Alpha & low gamma emitter
CARD 37 • BACK Francium (Fr) • Z = 87
👅 Can You Lick It? The Verdict:
THE ULTIMATE FORBIDDEN METAL! Francium is the heaviest alkali metal. Contact with saliva would unleash an atomic detonation, spraying boiling radioactive francium hydroxide (\(FrOH\)) and incinerating nearby tissue!
3D Puzzle Interlock Clue:
Bottom left of main periodic table! Period 7, Group 1. Anchors the bottom of the alkali column directly beneath Cesium (Cs).
💡 Wild Fact: Francium's most stable isotope has a half-life of only 22 minutes; it decays so fast it heats itself to boiling!
Melting Pt: ~27°C Discovered in 1939 by Marguerite Perey
CARD 40 • BACK Cadmium (Cd) • Z = 48
👅 Can You Lick It? The Verdict:
EXCRUCIATING BONE SICKNESS! Cadmium mimics zinc and calcium in biochemical pathways. It leaches calcium out of human skeletons, causing bones to warp and fracture. The resulting agony was named *itai-itai* ("it hurts, it hurts")!
3D Puzzle Interlock Clue:
Period 5, Group 12. Sits directly beneath Zinc (Zn) and above Mercury (Hg). In the 3D puzzle, these three tiles form the "Volatile Transition Triad".
💡 Wild Fact: Brilliant cadmium yellow and red oil paints were beloved by Vincent van Gogh and Claude Monet for their vivid intensity!
Biological half-life: 10–30 years Melting Pt: 321°C
CARD 39 • BACK Californium (Cf) • Z = 98
👅 Can You Lick It? The Verdict:
IRREVERSIBLE CELL DEATH! Californium-252 undergoes spontaneous nuclear fission. One single microgram shoots out 170 million neutrons every minute, passing through bone and flesh like subatomic bullets!
3D Puzzle Interlock Clue:
Actinide series. Sits between Berkelium (Bk) and Einsteinium (Es). Features high-level warning bevels on the lower pull-out drawer assembly.
💡 Wild Fact: It is so potent that airports use californium neutron scanners to detect concealed explosives and illegal minerals without opening luggage!
Cost: ~$27,000,000 per gram Spontaneous fission rate: 3.1%
CARD 42 • BACK Osmium (Os) • Z = 76
👅 Can You Lick It? The Verdict:
BLINDNESS IN SECONDS! Solid osmium metal is inert, but exposed powdered osmium oxidizes into osmium tetroxide (\(OsO_4\)). This volatile chemical gas instantly binds to organic fatty acids, permanently blackening and destroying corneas!
3D Puzzle Interlock Clue:
Period 6, Group 8. Sits below Iron (Fe) and Ruthenium (Ru), right beside Iridium (Ir). Marked with the heaviest density weight token in the puzzle.
💡 Wild Fact: A standard 1-liter milk carton filled with solid osmium would weigh an astounding 22.6 kg (nearly 50 pounds)!
Density: 22.59 g/cm³ Melting Pt: 3033°C
CARD 41 • BACK Antimony (Sb) • Z = 51
👅 Can You Lick It? The Verdict:
HORRIFIC POISONING! Antimony compounds bind to thiol groups in essential enzymes, causing excruciating abdominal cramps, continuous vomiting, and cardiac arrhythmias. It was often mistaken for cholera in Victorian poison trials!
3D Puzzle Interlock Clue:
Period 5, Group 15. Directly between Arsenic (As) and Bismuth (Bi). Puzzle tile has stair-step metalloid teeth linking metals to nonmetals.
💡 Wild Fact: In the 1700s, families bought reusable "antimony pills" that were swallowed as laxatives, recovered from waste, and passed down as heirlooms!
Melting Pt: 630.6°C Expands on freezing (like water)
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
3D Periodic Puzzle Companion • Lethal Segments C & D (Cards 43–48)
Page 3 • Fronts (Cards 43–48)
Cut along dashed lines • Flip long edge for backs
#37 85.468 u
Segment C • Terrors
Rb Rubidium Pyrophoric Alkali
Spontaneous Fire Melts @ 39.3°C
💥 IGNITES ON CONTACT Tier 5
Ignites instantly in open air without a spark! Touching saliva produces an immediate explosive shockwave.
Card 43 • Front Latin: Rubidus (Deepest Red Flame)
#56 137.33 u
Segment C • Terrors
Ba Barium Heart Stopper
Potassium Blocker Apple-Green Flame
☠️ COMPLETE MUSCLE PARALYSIS Tier 4
Soluble barium blocks cellular potassium channels, paralyzing voluntary muscles and stopping heartbeats!
Card 44 • Front X-ray milk uses insoluble BaSO₄
#52 127.60 u
Segment C • Terrors
Te Tellurium Garlic Curse Metal
Tellurium Breath Brittle Silvery Solid
⚠️ 8-MONTH ROTTEN GARLIC CURSE Tier 3
Even 10 micrograms licked converts into dimethyl telluride; your breath and sweat reek of pungent garlic for months!
Card 45 • Front Latin: Tellus (Planet Earth)
#86 222 u
Segment D • Invisible
Rn Radon Radioactive Gas
Basement Hazard Heaviest Gas
☢️ CANNOT LICK, INHALES CANCER Tier 5
Invisible gas seeping from bedrock; decays into solid polonium inside lungs. #1 lung cancer cause in non-smokers!
Card 46 • Front 8× denser than atmospheric air
#90 232.04 u
Segment D • Invisible
Th Thorium Thunder Metal
Thor's Element Dense Silver Metal
☢️ INTERNAL ALPHA BOMBARDMENT Tier 5
Mildly radioactive outside skin, but swallowing thorium dust irradiates organs and induces liver tumors.
Card 47 • Front Named after Norse God of Thunder
#85 210 u
Segment D • Invisible
At Astatine Rarest Earth Element
Boils Itself Instantly < 1g on Planet
☢️ VAPORIZES BEFORE LICKING Tier 5
Decays so furiously with alpha heat that any visible lump would flash-vaporize into radioactive gas instantly!
Card 48 • Front Greek: Astatos (Unstable)
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Front ↔ Col 2 Back
3D Periodic Puzzle Companion • Dossier & Clues (Cards 43–48)
Page 4 • Backs (Cards 43–48 Mirrored)
Aligns to Page 3 when printed double-sided
CARD 44 • BACK Barium (Ba) • Z = 56
👅 Can You Lick It? The Verdict:
POTASSIUM SHUTDOWN! Pure metallic barium reacts with mouth moisture to produce caustic \(Ba(OH)_2\). Free \(Ba^{2+}\) ions block inward potassium channels in muscles, causing generalized paralysis and cardiac ventricular fibrillation!
3D Puzzle Interlock Clue:
Period 6, Group 2 (Alkaline Earths). Sits right beneath Strontium (Sr) and above Radium (Ra). Tile features dual alkaline earth connector pins.
💡 Wild Fact: The vivid bright neon-green sparks in Fourth of July firework displays are created by burning barium nitrate!
Melting Pt: 727°C Greek: Barys (Heavy)
CARD 43 • BACK Rubidium (Rb) • Z = 37
👅 Can You Lick It? The Verdict:
CATASTROPHIC FIREBALL! 2Rb + 2H₂O → 2RbOH + H₂. Rubidium is so fiercely electropositive that it spontaneously catches fire in room air. In mouth saliva, it creates an instant explosion of caustic lye that shatters teeth!
3D Puzzle Interlock Clue:
Period 5, Group 1. Sits directly beneath Potassium (K) and above Cesium (Cs). Tile features an extended alkali interlock peg.
💡 Wild Fact: The first ever Bose-Einstein Condensate (a surreal new state of matter) was created in 1995 using laser-cooled Rubidium-87 atoms!
Density: 1.53 g/cm³ Stored in vacuum glass ampoules
CARD 46 • BACK Radon (Rn) • Z = 86
👅 Can You Lick It? The Verdict:
DEADLY INHALATION RISK! Radon cannot be licked because it is a dense room-temperature gas. However, when inhaled, it decays within 3.8 days into radioactive solid lead and polonium isotopes that lodge permanently in lung tissues!
3D Puzzle Interlock Clue:
Period 6, Group 18. Lowest naturally occurring member of the noble gas column. Sits right below Xenon (Xe) and beside Astatine (At).
💡 Wild Fact: Radon is responsible for more than 50% of the average human's entire annual background radiation exposure worldwide!
Density: 9.73 g/L (Heaviest gas) Half-life: 3.82 days (Rn-222)
CARD 45 • BACK Tellurium (Te) • Z = 52
👅 Can You Lick It? The Verdict:
SOCIAL EXILE FOR 8 MONTHS! Even absorbing a microscopic speck of tellurium causes your liver to methylate it into dimethyl telluride. This compound produces a pungent, foul garlic odor that radiates from breath, sweat, and urine for months!
3D Puzzle Interlock Clue:
Period 5, Group 16. Sits directly under Selenium (Se) and above Polonium (Po). Sits between Antimony (Sb) and Iodine (I) on the metalloid line.
💡 Wild Fact: Tellurium readily forms compounds with Gold (calaverite mineral); historically, prospectors paved roads with rock before realizing it was gold telluride!
Melting Pt: 449.5°C Used in rewritable Blu-ray discs
CARD 48 • BACK Astatine (At) • Z = 85
👅 Can You Lick It? The Verdict:
PHYSICALLY IMPOSSIBLE TO LICK! Astatine is the heaviest halogen. If you gathered enough to see with your eye, the tremendous energy of its alpha particle emissions would instantly vaporize it into purple radioactive gas!
3D Puzzle Interlock Clue:
Period 6, Group 17 (Halogens). Sits directly beneath Iodine (I) and left of Radon (Rn). Puzzle tile has a translucent phantom ghost finish.
💡 Wild Fact: Scientists estimate that at any given moment, the entire crust of the Earth contains less than 25 milligrams of astatine!
Half-life: 8.1 hours (At-210) Investigated for targeted cancer alpha therapy
CARD 47 • BACK Thorium (Th) • Z = 90
👅 Can You Lick It? The Verdict:
INTERNAL RADIATION HAZARD! Solid thorium emits low alpha radiation that cannot penetrate outer skin. However, licking or swallowing thorium dust allows alpha particles to directly irradiate your liver and bone marrow!
3D Puzzle Interlock Clue:
First official element of the Actinide series! Sits directly to the right of Actinium (Ac) and left of Protactinium (Pa) in the separate lower tray.
💡 Wild Fact: Thorium is 3× more abundant in Earth's crust than uranium and is being researched as a safer alternative fuel for nuclear power!
Half-life: 14.05 billion years Melting Pt: 1750°C
Cut along outer borders of each card tile Double-Sided Matching: Col 1 Back ↔ Col 2 Front
#24 52.00 u
Tile P4 • G6
Cr Chromium Mirror Metal
Ruby & Bumper Stainless Steel
👅 Cr³⁺ NUTRIENT / Cr⁶⁺ POISON Tier 1 / 4
Chrome bumpers are inert! Cr(III) aids insulin. But hexavalent Cr(VI) (Erin Brockovich chemical) causes ulcers & cancer.
Card 56 • Front Colors emeralds & rubies
#25 54.94 u
Tile P4 • G7
Mn Manganese Hardener Metal
Amethyst Violet Alkaline Battery
⚠️ DIET YES / INHALING NO Tier 2
Enzymes need trace Mn! But breathing manganese fumes causes "manganism" with uncontrollable nerve tremors.
Card 57 • Front Made clear glass in ancient Rome
#27 58.93 u
Tile P4 • G9
Co Cobalt Magnetic Blue
Cobalt Blue Vitamin B₁₂ Core
👅 B₁₂ PILL YES / SALTS NO Tier 2
You eat cobalt inside Vitamin B₁₂ daily! But licking raw cobalt salts damages the heart muscle and thyroid.
Card 58 • Front German: Kobold (Mine Goblin)
#28 58.69 u
Tile P4 • G10
Ni Nickel Core Metal
5¢ Coinage Earth Core Giant
⚠️ COMMON ALLERGIC RASH Tier 2
5¢ coins are 25% nickel! Roughly 15% of people develop itchy contact dermatitis from cheap jewelry or coins.
Card 59 • Front Kupfernickel (Devil's Copper)
#32 72.63 u
Tile P4 • G14
Ge Germanium Semiconductor
Night Vision Fiber Optics
⚠️ FAKE CURE / KIDNEY TOXIN Tier 2
Sold in fake miracle tonics, but long-term ingestion causes permanent kidney damage and neuropathy!
Card 60 • Front Transparent to infrared light
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Pocket Edition • Cards 49–60 Backs
Page 2 • Backs (Mirrored)
Aligns to Page 1 when printed double-sided
CARD 51 • BACK Magnesium (Mg) • Z=12
👅 Can You Lick It?
FOOD: YES / FLARE: NO! Milk of Magnesia (\(Mg(OH)_2\)) soothes stomachs, but ignited metal burns fiercely, stripping oxygen from \(CO_2\) and water!
Puzzle Spec:
Period 3, Group 2. Interlocks beneath Beryllium (Be) and above Calcium (Ca). Two male alkaline pegs.
💡 Fact: Magnesium is essential for >300 biochemical body reactions!
Melting Pt: 650°C Density: 1.74 g/cm³
CARD 50 • BACK Neon (Ne) • Z=10
👅 Can You Lick It?
CANNOT LICK GAS! Non-reactive noble gas. High voltage excites electrons to emit bright red-orange photons. Do not lick high-voltage glass sign electrodes!
Puzzle Spec:
Period 2, Group 18. Positioned between Fluorine and Helium. Flat outer right-edge puzzle perimeter.
💡 Fact: Neon is the 5th most abundant element in the universe!
Boiling Pt: -246°C Greek: Neos (New)
CARD 49 • BACK Boron (B) • Z=5
👅 Can You Lick It?
SAFE IN PLANTS! Apples and almonds supply healthy boron. Boric acid is an antiseptic and roach powder; toxic if swallowed in spoonful amounts.
Puzzle Spec:
Period 2, Group 13. Top of the metalloid diagonal line. Snaps beside Carbon (C) and above Aluminum (Al).
💡 Fact: Cross-linking silicone oil with boric acid creates classic Silly Putty!
Melting Pt: 2076°C Mohs Hardness: 9.3
CARD 54 • BACK Scandium (Sc) • Z=21
👅 Can You Lick It?
UNHARMED BUT FOUL! Scandium metal has no biological uptake. Licking an alloy bicycle frame or softball bat tastes metallic with no toxic harm.
Puzzle Spec:
Period 4, Group 3. Gateway to the transition metals. Sits right between Calcium (Ca) and Titanium (Ti).
💡 Fact: Scandium iodide in stadium floodlights replicates bright sunlight!
Melting Pt: 1541°C Density: 2.98 g/cm³
CARD 53 • BACK Argon (Ar) • Z=18
👅 Can You Lick It?
100% INERT INHALATION! Colorless, odorless, completely non-toxic. Used in luxury wine preservers to blanket wine surfaces and stop vinegar oxidation!
Puzzle Spec:
Period 3, Group 18. Sits below Neon (Ne) and above Krypton (Kr). Zero valence connection pegs.
💡 Fact: Decaying Potassium-40 deep in Earth's crust creates our atmospheric argon!
Boiling Pt: -185.8°C Density: 1.78 g/L
CARD 52 • BACK Aluminum (Al) • Z=13
👅 Can You Lick It?
SAFE FOOD WRAPPER! Chocolate foil and soda cans are coated. Biting foil with amalgam fillings generates a micro-battery electric shock in nerves!
Puzzle Spec:
Period 3, Group 13. Sits between Magnesium (Mg) and Silicon (Si). Three connector sockets.
💡 Fact: Recycling an aluminum can saves 95% of energy needed to make a new one!
Melting Pt: 660.3°C Density: 2.70 g/cm³
CARD 57 • BACK Manganese (Mn) • Z=25
👅 Can You Lick It?
TRACE NUTRIENT ONLY! Tea leaves contain manganese. Potassium permanganate (\(KMnO_4\)) is a caustic purple oxidizer that burns mouth tissue!
Puzzle Spec:
Period 4, Group 7. Sits directly between Chromium (Cr) and Iron (Fe). Heavy structural interlock.
💡 Fact: Over half of all steel railroad switches are impact-hardened with 12% manganese!
Melting Pt: 1246°C Density: 7.21 g/cm³
CARD 56 • BACK Chromium (Cr) • Z=24
👅 Can You Lick It?
VALENCE MATTERS! Metallic chrome on faucets is passive and harmless. Cr(VI) chromate salts are deadly mutagenic poisons that eat skin ulcers.
Puzzle Spec:
Period 4, Group 6. Sits left of Manganese. Stainless steel alloy formula tab in puzzle tray.
💡 Fact: Stainless steel must have at least 10.5% chromium to prevent rust!
Melting Pt: 1907°C Greek: Chroma (Color)
CARD 55 • BACK Vanadium (V) • Z=23
👅 Can You Lick It?
SOLID WRENCH YES / SALTS NO! Henry Ford used vanadium steel in the Model T axle. Vanadium pentoxide (\(V_2O_5\)) dust causes gastrointestinal cramps.
Puzzle Spec:
Period 4, Group 5. Connects between Titanium (Ti) and Chromium (Cr). Multi-valence interlock.
💡 Fact: Sea squirts (ascidians) absorb vanadium from ocean water 1,000,000×!
Melting Pt: 1910°C Density: 6.11 g/cm³
CARD 60 • BACK Germanium (Ge) • Z=32
👅 Can You Lick It?
DO NOT CONSUME! Solid metalloid lenses are safe. Germanium health supplements accumulate in kidney tubules and lead to renal failure and death!
Puzzle Spec:
Period 4, Group 14. Predicted as "Ekasilicon" by Mendeleev before its discovery in 1886.
💡 Fact: The world's first working transistor in 1947 was made of germanium!
Melting Pt: 938.3°C Expands on freezing (like ice)
CARD 59 • BACK Nickel (Ni) • Z=28
👅 Can You Lick It?
BITTER METALLIC TASTE! Licking nickels releases \(Ni^{2+}\) ions. Can trigger nickel allergy flare-ups. Toxic nickel tetracarbonyl (\(Ni(CO)_4\)) gas is lethal!
Puzzle Spec:
Period 4, Group 10. Ferromagnetic triad. Connects with Cobalt (Co) and Copper (Cu).
💡 Fact: Iron-nickel meteorites date back 4.5 billion years to solar system birth!
Melting Pt: 1455°C Density: 8.91 g/cm³
CARD 58 • BACK Cobalt (Co) • Z=27
👅 Can You Lick It?
SAFE IN VITAMINS! In the 1960s, cobalt sulfate was added to beer to stabilize foam, causing fatal heart failure ("beer drinker's cardiomyopathy")!
Puzzle Spec:
Period 4, Group 9. Sits between Iron (Fe) and Nickel (Ni). Features permanent magnetic notch.
💡 Fact: Cobalt-60 creates high-energy gamma rays to sterilize surgical scalpels!
Melting Pt: 1495°C Density: 8.90 g/cm³
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
3D Periodic Puzzle Companion • Pocket Edition • Cards 61–72 Fronts
Page 3 • Fronts (Cards 61–72)
3×4 Mini Tiles • Cut along dashed borders
#34 78.97 u
Tile P4 • G16
Se Selenium Moon Chalcogen
Brazil Nuts Photocopiers
⚠️ 1 NUT VITAL / 10 TOXIC Tier 3
1 Brazil nut fulfills daily selenium. But an overdose causes garlic breath, hair loss, and blind staggers!
Card 61 • Front Greek: Selene (Moon Goddess)
#36 83.80 u
Tile P4 • G18
Kr Krypton Noble Gas
Green-White Glow Airport Flashes
⚠️ AIR DISPLACEMENT HAZARD Tier 2
Non-toxic inert gas (and not green Superman crystal!). Inhaling it deepens voice pitch but causes asphyxiation!
Card 62 • Front Defined the standard meter (1960)
#38 87.62 u
Tile P5 • G2
Sr Strontium Crimson Flare
Red Fireworks Road Flares
💥 CAUSTIC FIZZ IN SALIVA Tier 3
Crimson firework salt is low toxicity. Pure metal reacts aggressively with saliva to make burning \(Sr(OH)_2\) lye!
Card 63 • Front Named after Strontian, Scotland
#40 91.22 u
Tile P5 • G4
Zr Zirconium Nuclear Armor
Cubic Zirconia Reactor Cladding
👅 100% BIOCOMPATIBLE Tier 1
Extremely bio-inert! Zirconia ceramic crowns and faux diamond rings never corrode in saliva or cause body toxicity.
Card 64 • Front Absorbs zero nuclear neutrons
#41 92.91 u
Tile P5 • G5
Nb Niobium Rainbow Metal
Body Piercings MRI Super-Magnet
👅 HYPOALLERGENIC YES Tier 1
Completely non-reactive and skin-safe! Anodizing niobium produces stunning rainbow colors without dyes.
Card 65 • Front Formerly named Columbium (Cb)
#42 95.95 u
Tile P5 • G6
Mo Molybdenum High-Heat Steel
Tank Cannon Plant Enzyme
👅 DIETARY TRACE / INERT SOLID Tier 1
Plants need it to process nitrogen. High-strength steel alloy tools withstand volcanic friction without melting.
Card 66 • Front Big Bertha WWI siege guns
#43 98 u
Tile P5 • G7
Tc Technetium Synthetic Metal
Hospital Scans All Isotopes Unstable
☢️ DO NOT LICK / MED SCAN ONLY Tier 5
Radioactive! Rarest light element. Tc-99m gamma emitter is injected 40 million times annually for bone scans!
Card 67 • Front 1st artificial element (1937)
#46 106.4 u
Tile P5 • G10
Pd Palladium Gas Sponge
Catalytic Clean 900× H₂ Sponge
👅 NOBLE & BIO-INERT Tier 1
Harmless noble metal! Used in dental crowns and jewelry. Converts toxic exhaust fumes in catalytic converters.
Card 68 • Front Named after asteroid Pallas
#49 114.8 u
Tile P5 • G13
In Indium Phone Touch
Touchscreens Screaming Metal
⚠️ CHEWABLE BUT DON'T EAT Tier 2
Soft enough to bite with teeth (produces a crying scream sound!). Low toxicity, but ITO phone dust harms lungs.
Card 69 • Front Indigo spectral emission line
#50 118.7 u
Tile P5 • G14
Sn Tin Bronze Builder
Canned Food Bronze Age Base
👅 TASTES BLAND / FOOD SAFE Tier 1
Safely lines soup cans! Organic organotin compounds are toxic, but pure metal has protected food for centuries.
Card 70 • Front Freezing turns it to powder (Tin Pest)
#78 195.1 u
Tile P6 • G10
Pt Platinum Noble Titan
Cancer Chemo Zero Corrosion
👅 NOBLE YES / CHEMO TOXIC Tier 1
Immune to saliva and stomach acids! Cisplatin platinum drugs battle cancer by bonding and shredding tumor DNA.
Card 71 • Front Spanish: Platina (Little Silver)
#99 252 u
Tile Actinide
Es Einsteinium H-Bomb Titan
Blue Glow Fire Ivy Mike Blast
☢️ GLOWING THERMAL DOOM Tier 5
Emits intense radiation that boils its own lattice! Glows visible blue in the dark; licking delivers fatal organ burns.
Card 72 • Front Named for Albert Einstein
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Pocket Edition • Cards 61–72 Backs
Page 4 • Backs (Mirrored)
Aligns to Page 3 when printed double-sided
CARD 63 • BACK Strontium (Sr) • Z=38
👅 Can You Lick It?
BONES MISTAKE IT FOR CALCIUM! Stable strontium is used in bone-strengthening supplements. Radioactive fallout Sr-90 concentrates in teeth and bone marrow!
Puzzle Spec:
Period 5, Group 2. Sits beneath Calcium (Ca) and above Barium (Ba). Two connector pegs.
💡 Fact: Deep-sea radiolarians build intricate glass shells out of strontium sulfate!
Melting Pt: 777°C Density: 2.64 g/cm³
CARD 62 • BACK Krypton (Kr) • Z=36
👅 Can You Lick It?
ZERO CHEMICAL TASTE! Pure krypton has no flavor. Used in high-speed flash photography and insulated window panes because it conducts heat poorly.
Puzzle Spec:
Period 4, Group 18. Positioned right below Argon (Ar) and above Xenon (Xe). Flush boundary tile.
💡 Fact: Greek *Kryptos* means "hidden"; discovered in liquid air residue!
Boiling Pt: -153.4°C Density: 3.75 g/L
CARD 61 • BACK Selenium (Se) • Z=34
👅 Can You Lick It?
NARROW SAFE MARGIN! Essential for cellular glutathione antioxidant enzymes. Licking selenium powder generates rotten-horseradish hydrogen selenide!
Puzzle Spec:
Period 4, Group 16. Sits directly between Arsenic (As) and Bromine (Br), right below Sulfur (S).
💡 Fact: Selenium sulfide is the active fungus-fighting agent in anti-dandruff shampoo!
Melting Pt: 221°C Photoconductive element
CARD 66 • BACK Molybdenum (Mo) • Z=42
👅 Can You Lick It?
VITAL TO HUMAN LIFE! Nitrogenase enzymes in legume roots rely on molybdenum to turn air into fertilizer. Pure metal is completely insolubly inert in mouth!
Puzzle Spec:
Period 5, Group 6. Sits below Chromium (Cr) and above Tungsten (W). Refractory metal notch.
💡 Fact: Molybdenum disulfide (\(MoS_2\)) is a super-slippery lubricant used in space!
Melting Pt: 2623°C (Extreme) Density: 10.28 g/cm³
CARD 65 • BACK Niobium (Nb) • Z=41
👅 Can You Lick It?
PERFECT BIO-SAFETY! Doesn't react with perspiration or saliva. Superconducting Nb-Ti alloy wire generates the intense 3-Tesla magnetic fields in hospital MRI scans!
Puzzle Spec:
Period 5, Group 5. Connects between Zirconium (Zr) and Molybdenum (Mo), right below Vanadium (V).
💡 Fact: Named after Niobe, daughter of mythical King Tantalus in Greek lore!
Superconducting at 9.2 K Melting Pt: 2477°C
CARD 64 • BACK Zirconium (Zr) • Z=40
👅 Can You Lick It?
TOTAL DENTAL IMMUNITY! Zirconia (\(ZrO_2\)) is used for ultra-tough dental bridges and hip replacements because human tissue accepts it with zero inflammation!
Puzzle Spec:
Period 5, Group 4. Sits directly under Titanium (Ti) and above Hafnium (Hf). High-hardness tile.
💡 Fact: Zircon mineral crystals are the oldest surviving pieces of Earth (~4.4B yrs old)!
Melting Pt: 1855°C Density: 6.52 g/cm³
CARD 69 • BACK Indium (In) • Z=49
👅 Can You Lick It?
LICKING PHONE SCREENS! Touchscreens are coated with Indium Tin Oxide (ITO). Clean screen is safe, but licking public phone screens exposes you to nasty bacteria!
Puzzle Spec:
Period 5, Group 13. Sits between Cadmium (Cd) and Tin (Sn), right below Gallium (Ga).
💡 Fact: Indium sticks to clean glass when rubbed, making high-vacuum seals!
Melting Pt: 156.6°C (Low) Mohs Hardness: 1.2 (Ultra-soft)
CARD 68 • BACK Palladium (Pd) • Z=46
👅 Can You Lick It?
100% INERT PRECIOUS METAL! Certified safe for dental fillings and white gold jewelry. In 2010, the Nobel Prize was awarded for palladium-catalyzed cross-couplings!
Puzzle Spec:
Period 5, Group 10. Sits between Rhodium (Rh) and Silver (Ag), right below Nickel (Ni).
💡 Fact: Absorbing hydrogen makes palladium expand like a balloon!
Melting Pt: 1555°C Density: 12.02 g/cm³
CARD 67 • BACK Technetium (Tc) • Z=43
👅 Can You Lick It?
NEVER LICK MEDICAL TRACERS! Technetium-99m has a 6-hour half-life, emitting clean 140 keV gamma rays for SPECT camera imaging before decaying away safely!
Puzzle Spec:
Period 5, Group 7. Sits below Manganese (Mn) and above Rhenium (Re). Distinct radiation icon bevel.
💡 Fact: First discovered in red giant stars before Earth synthesis!
Half-life: 211,000 yrs (Tc-99) Melting Pt: 2157°C
CARD 72 • BACK Einsteinium (Es) • Z=99
👅 Can You Lick It?
VAPORIZES FLESH! Released in the 1952 "Ivy Mike" 10.4-megaton thermonuclear test. Its alpha radioactivity is so ferocious that microgram amounts glow eerie sky-blue!
Puzzle Spec:
Actinide series (f-block). Sits between Californium (Cf) and Fermium (Fm) in lower pull-out drawer.
💡 Fact: Only micrograms have ever been produced in human history!
Half-life: 20.47 days (Es-253) Melting Pt: 860°C
CARD 71 • BACK Platinum (Pt) • Z=78
👅 Can You Lick It?
ROYAL IMMUNITY! Gold and platinum are the most unreactive metals on Earth. Acids cannot dissolve it (except boiling aqua regia!). Completely safe in teeth and pacemakers.
Puzzle Spec:
Period 6, Group 10. Sits between Iridium (Ir) and Gold (Au), right below Palladium (Pd).
💡 Fact: All platinum ever mined would barely fill an average living room!
Density: 21.45 g/cm³ Melting Pt: 1768°C
CARD 70 • BACK Tin (Sn) • Z=50
👅 Can You Lick It?
HISTORIC FOOD SAFEGUARD! Metallic tin resists organic acids in food. Tin cans prevented scurvy and malnutrition in sailors by preserving rations on voyages!
Puzzle Spec:
Period 5, Group 14. Located between Indium (In) and Antimony (Sb), directly above Lead (Pb).
💡 Fact: Napoleon's army allegedly suffered in Russian winter when tin uniform buttons rotted!
Melting Pt: 231.9°C Latin: Stannum (Sn)
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
Card 79 • Front Latin: Ruthenia (Russia)
#45 102.9 u
Tile P5 • G9
Rh Rhodium Hyper-Luxury
$10k / Ounce Ultra-Reflective
👅 PURE NOBLE IMMUNITY Tier 1
Plates white gold jewelry with dazzling scratch-proof mirror gloss! Zero chemical reaction with human saliva or body acids.
Card 80 • Front Greek: Rhodon (Rose-colored salts)
#47 107.9 u
Tile P5 • G11
Ag Silver Peak Conductor
Kills Germs Top Conductor
👅 SPOON YES / ARGYRIA WARNING Tier 1
Eating with silverware kills mouth bacteria! But drinking colloidal silver over years permanently dyes your skin smurf-blue (argyria)!
Card 81 • Front Latin: Argentum (Shining Light)
#51 121.8 u
Tile P5 • G15
Sb Antimony Toxic Metalloid
Ancient Kohl Flame Retardant
⚠️ TOXIC ARSENIC COUSIN Tier 3
Used as Cleopatra's eyeliner! Ingesting antimony mimics arsenic poisoning: vomiting, cramps, and heart arrhythmias.
Card 82 • Front Latin: Stibium (Eye Paint)
#52 127.6 u
Tile P5 • G16
Te Tellurium Earth Chalcogen
Solar Cells CD-RW Discs
🧄 6-MONTH GARLIC BREATH! Tier 3
Absorbing just micrograms makes the body synthesize dimethyl telluride. You sweat and exhale intense rotten garlic odor for months!
Card 83 • Front Latin: Tellus (Earth Mother)
#56 137.3 u
Tile P6 • G2
Ba Barium Heavy Earth
Green Sparks X-Ray Milkshake
🥛 SAFE SHAKE / DEADLY SALTS Tier 1 / 4
Insoluble \(BaSO_4\) passes through gut safely to glow on X-rays! But soluble barium chloride paralyzes muscles and stops the heart.
Card 84 • Front Greek: Barys (Heavy)
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Pocket Edition • Cards 73–84 Backs
Page 2 • Backs (Mirrored)
Aligns to Page 1 when printed double-sided
CARD 75 • BACK Gallium (Ga) • Z=31
👅 Can You Lick It?
DO NOT EAT THE MELT! Holding a solid gallium spoon melts into liquid puddle in warm tea. Licking it leaves unpleasant metallic residue and mild gastro-upset!
Puzzle Spec:
Period 4, Group 13. Snaps directly between Zinc (Zn) and Germanium (Ge), right beneath Aluminum (Al).
💡 Fact: Liquid gallium infiltrates aluminum grain boundaries, making soda cans crumble like paper!
Melting Pt: 29.76°C Boiling Pt: 2204°C (Huge liquid range)
CARD 74 • BACK Titanium (Ti) • Z=22
👅 Can You Lick It?
SURGICALLY INERT! Hip replacements and dental tooth posts are pure titanium. Forms an instantaneous impervious TiO₂ oxide skin that never corrodes in saliva!
Puzzle Spec:
Period 4, Group 4. Sits between Scandium (Sc) and Vanadium (V). Features four interlocking tabs.
💡 Fact: Titanium is as strong as steel but 45% lighter, making it ideal for supersonic jets!
Melting Pt: 1668°C Density: 4.51 g/cm³
CARD 73 • BACK Bismuth (Bi) • Z=83
👅 Can You Lick It?
SURPRISINGLY SAFE! Unlike toxic lead neighbors, bismuth is non-toxic. Pink stomach medicine contains bismuth to kill stomach bacteria! Expands when freezing.
Puzzle Spec:
Period 6, Group 15. Sits between Lead (Pb) and Polonium (Po). Staircase-shaped interlock pattern.
💡 Fact: Thin surface oxide layers create brilliant rainbow light interference colors!
Melting Pt: 271.4°C Strongest diamagnet metal
CARD 78 • BACK Yttrium (Y) • Z=39
👅 Can You Lick It?
NOT DANGEROUS TO TOUCH! No biological function, but low human toxicity. YBCO (\(YBa_2Cu_3O_7\)) levitates over magnets when chilled in liquid nitrogen!
Puzzle Spec:
Period 5, Group 3. Sits below Scandium (Sc) and connects directly above the Lanthanide series.
💡 Fact: Four elements are named after Ytterby village: Yttrium, Terbium, Erbium, Ytterbium!
Melting Pt: 1526°C Density: 4.47 g/cm³
CARD 77 • BACK Rubidium (Rb) • Z=37
👅 Can You Lick It?
NEVER PUT IN MOUTH! Pyrophoric alkali metal ignites instantly in moist air. Saliva contact produces an instant thermal shockwave and blinding chemical burns!
Puzzle Spec:
Period 5, Group 1. Alkali column tab. Located beneath Potassium (K) and above Cesium (Cs).
💡 Fact: Rubidium vapor atomic clocks lose only 1 second every 10,000 years!
Melting Pt: 39.3°C Stored sealed under mineral oil
CARD 76 • BACK Bromine (Br) • Z=35
👅 Can You Lick It?
DEADLY CORROSIVE! Liquid bromine rapidly attacks flesh, creating deep painful lesions that take months to heal. Breathing vapor causes fatal pulmonary edema!
Puzzle Spec:
Period 4, Group 17. Sits right between Chlorine (Cl) and Iodine (I). Halogen receptor ridge.
💡 Fact: Ancient Tyrian purple dye was extracted from sea snails using natural bromine compounds!
Boiling Pt: 58.8°C Density: 3.10 g/cm³
CARD 81 • BACK Silver (Ag) • Z=47
👅 Can You Lick It?
SILVERWARE IS SAFE! Silver ions disrupt bacterial membranes (oligodynamic effect). Silver coins were dropped into milk jugs in pioneer days to keep milk fresh!
Puzzle Spec:
Period 5, Group 11. Coinage metal column. Sits between Copper (Cu) and Gold (Au).
💡 Fact: Silver possesses the highest electrical and thermal conductivity of any known element!
Melting Pt: 961.8°C Density: 10.49 g/cm³
CARD 80 • BACK Rhodium (Rh) • Z=45
👅 Can You Lick It?
IMMUNE TO ACIDS! Extremely noble metal. Rhodium plated wedding rings do not tarnish, react with sweat, or irritate sensitive skin in any way.
Puzzle Spec:
Period 5, Group 9. Sits right between Ruthenium (Ru) and Palladium (Pd), below Cobalt (Co).
💡 Fact: Over 80% of world rhodium is used in vehicle catalytic converters to eliminate toxic \(NO_x\)!
Melting Pt: 1964°C Density: 12.41 g/cm³
CARD 79 • BACK Ruthenium (Ru) • Z=44
👅 Can You Lick It?
SOLID METALLIC INERTIA! Safe in pen nibs and hard disk drive platters. However, heating it in oxygen creates \(RuO_4\) gas which causes ocular blindness and lung failure!
Puzzle Spec:
Period 5, Group 8. Sits below Iron (Fe) and above Osmium (Os). Four-direction interlock.
💡 Fact: Adding 0.1% ruthenium makes titanium 100 times more resistant to harsh acids!
Melting Pt: 2334°C Density: 12.37 g/cm³
CARD 84 • BACK Barium (Ba) • Z=56
👅 Can You Lick It?
ONLY THE SULFATE! Patients swallow chalky \(BaSO_4\) because its solubility is near zero, passing unharmed. Soluble \(Ba^{2+}\) blocks potassium channels, stopping heartbeat!
Puzzle Spec:
Period 6, Group 2. Alkaline earth family. Sits beneath Strontium (Sr) and above Radium (Ra).
💡 Fact: Barium nitrate produces the rich vibrant emerald-green in Fourth of July fireworks!
Melting Pt: 727°C Density: 3.51 g/cm³
CARD 83 • BACK Tellurium (Te) • Z=52
👅 Can You Lick It?
EXTREME SOCIAL ISOLATION! Even touch absorption causes the body to emit volatile dimethyl telluride in sweat and breath. Colleagues will smell you across the room for months!
Puzzle Spec:
Period 5, Group 16. Chalcogen metalloid. Sits right below Selenium (Se) and above Polonium (Po).
💡 Fact: One of the rare elements that readily bonds with gold in nature (forming calaverite)!
Melting Pt: 449.5°C Density: 6.24 g/cm³
CARD 82 • BACK Antimony (Sb) • Z=51
👅 Can You Lick It?
DON'T LICK ANTIMONY! Medieval doctors prescribed reusable "perpetual antimony pills" as violent laxatives that were retrieved and reused for generations! Toxic to liver.
Puzzle Spec:
Period 5, Group 15. Metalloid border line. Sits below Arsenic (As) and above Bismuth (Bi).
💡 Fact: Expands upon freezing, allowing molten metal to fill intricate molds for printing type!
Melting Pt: 630.6°C Mohs Hardness: 3.0
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
3D Periodic Puzzle Companion • Pocket Edition • Cards 85–96 Fronts
Page 3 • Fronts (Cards 85–96)
3×4 Mini Tiles • Cut along dashed borders
#57 138.9 u
Tile Lanthanide
La Lanthanum f-Block Key
Camera Glass Flint Lighters
⚠️ LOW TOXICITY / FLINT DUST Tier 2
High refractive index glass sharpens camera lenses! Lanthanum carbonate tablets bind phosphate in dialysis patients.
Card 85 • Front Greek: Lanthanein (To Lie Hidden)
#58 140.1 u
Tile Lanthanide
Ce Cerium Firestarter
Firesteel Rod Self-Clean Oven
💥 3000°C FLYING SPARKS Tier 2
Ferrocerium survival rods throw cascades of white-hot 3,000°C sparks! Ingestion causes mild nausea; do not lick sparks!
Card 86 • Front Named after dwarf planet Ceres
#60 144.2 u
Tile Lanthanide
Nd Neodymium Supermagnet
NdFeB Magnet Purple Glass
⚠️ PINCH RISK / DON'T SWALLOW Tier 2
Plated nickel coating is inert. But swallowing two rare-earth magnets clamps intestines together, causing fatal perforations!
Card 87 • Front Greek: Neos Didymos (New Twin)
#62 150.4 u
Tile Lanthanide
Sm Samarium High-Heat Magnet
SmCo Magnets Cancer Therapy
⚠️ EYE IRRITANT / BONE TARGET Tier 2
Samarium-Cobalt magnets stay magnetic up to 700°C! Radioactive Sm-153 is injected to relieve pain in advanced bone cancer.
Card 88 • Front 1st element named for a person (Samarsky)
#63 152.0 u
Tile Lanthanide
Eu Europium Red Phosphor
Euro Notes UV Luminescence
👅 SAFE ON CASH / PYROPHORIC Tier 2
Licking a genuine Euro banknote reveals zero taste. But pure europium metal oxidizes furiously and can ignite in warm air!
Card 89 • Front Named after the continent Europe
#64 157.3 u
Tile Lanthanide
Gd Gadolinium MRI Beacon
MRI Dye Neutron Sponge
⚠️ CHELATED YES / FREE ION NO Tier 2
Seven unpaired electrons light up MRI scans! Chelated contrast is safely excreted, but free unbonded \(Gd^{3+}\) ions poison kidneys.
Card 90 • Front Curie temp: 20°C (magnetic in winter)
#73 180.9 u
Tile P6 • G5
Ta Tantalum Phone Microchip
Capacitors Skull Plates
👅 100% SURGICAL BIO-SAFETY Tier 1
Completely immune to body fluids and stomach acids! Used for surgical cranial plates, suture clips, and pacemakers.
Card 91 • Front Named for King Tantalus
#75 186.2 u
Tile P6 • G7
Re Rhenium Jet Turbine
Melts at 3186°C Jet Superalloys
👅 INERT SOLID / ULTRA-RARE Tier 1
Survives white-hot infernos inside Boeing 777 jet engines without warping! Zero toxicity in solid bulk form.
Card 92 • Front Last stable element discovered (1925)
#76 190.2 u
Tile P6 • G8
Os Osmium Density King
22.59 g/cm³ Heaviest Matter
☠️ LETHAL VOLATILE FUMES Tier 4
Heaviest element on Earth! Solid block is harmless, but fine osmium powder forms pungent \(OsO_4\) gas that permanently blinds retinas!
Card 93 • Front Greek: Osme (Smell)
#77 192.2 u
Tile P6 • G9
Ir Iridium Dino Asteroid
Spark Plugs K-Pg Clay Layer
👅 NOBLE METAL IMMUNITY Tier 1
Most corrosion-resistant metal known! Licking a solid ingot is totally harmless. Marks the 66-million-year-old dinosaur extinction layer!
Card 94 • Front Greek: Iris (Rainbow)
#90 232.0 u
Tile Actinide
Th Thorium Green Nuclear
LFTR Reactor Lantern Mantles
☢️ ALPHA RADIATION / DO NOT EAT Tier 4
Used in glowing vintage camping gas mantles. Alpha radiation cannot pierce skin, but swallowed dust lodges in bone and lung tissue!
Card 95 • Front Named for Norse God Thor
#118 294 u
Tile P7 • G18
Og Oganesson Table Finale
Only 5 Atoms 0.7 ms Half-life
☢️ VAPORIZES BEFORE TASTE Tier 5
Final element on the periodic table! Only a handful of atoms ever made in particle accelerators; decays in less than 1 millisecond!
Card 96 • Front Named for physicist Yuri Oganessian
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Pocket Edition • Cards 85–96 Backs
Page 4 • Backs (Mirrored)
Aligns to Page 3 when printed double-sided
CARD 87 • BACK Neodymium (Nd) • Z=60
👅 Can You Lick It?
CRUSH HAZARD! Plated magnets taste like shiny nickel. But two large neodymium magnets snap together with 100+ lbs of force, shattering fingers or teeth!
Puzzle Spec:
Lanthanide tray (f-block). Sits between Praseodymium (Pr) and Promethium (Pm). Strong magnetic tab.
💡 Fact: Powers electric vehicle drive motors and wind turbine generators!
Melting Pt: 1024°C Density: 7.01 g/cm³
CARD 86 • BACK Cerium (Ce) • Z=58
👅 Can You Lick It?
SPARKING SURVIVAL GEAR! Scraping cerium flints against steel shaved tiny particles that burst into flames in air. Solid metal has low oral toxicity; tastes sour.
Puzzle Spec:
Lanthanide series. Sits directly between Lanthanum (La) and Praseodymium (Pr) in bottom row.
💡 Fact: Cerium oxide powder is used worldwide to precision-polish telescope mirrors!
Melting Pt: 798°C Most abundant rare-earth metal
CARD 85 • BACK Lanthanum (La) • Z=57
👅 Can You Lick It?
SAFE IN MEDICAL USE! Lanthanum carbonate (Fosrenol) pills are chewed by kidney patients to capture dietary phosphates. Soft metal scratches easily with a knife.
Puzzle Spec:
Anchor tile for the entire Lanthanide series (Period 6, Group 3 pull-out tray).
💡 Fact: Toyota Prius hybrid nickel-metal hydride batteries contain ~10–15 kg of lanthanum!
Melting Pt: 920°C Density: 6.16 g/cm³
CARD 90 • BACK Gadolinium (Gd) • Z=64
👅 Can You Lick It?
CHELATED IN HOSPITAL ONLY! Injected MRI contrast wraps gadolinium in safe chemical cages. Never consume free gadolinium metal salts, which disrupt body calcium!
Puzzle Spec:
Lanthanide middle tile. Positioned between Europium (Eu) and Terbium (Tb).
💡 Fact: Exhibits a massive magnetocaloric effect—warms up in magnetic fields and cools when removed!
Melting Pt: 1312°C Highest thermal neutron absorption
CARD 89 • BACK Europium (Eu) • Z=63
👅 Can You Lick It?
GLOWING CURRENCY! European Central Bank embeds europium phosphors in €5 to €500 bills. Placing bills under blacklight produces brilliant red, green, and blue glows!
Puzzle Spec:
Lanthanide tray. Sits directly between Samarium (Sm) and Gadolinium (Gd). Phosphor icon imprint.
💡 Fact: Without europium, color televisions could never display vivid red colors!
Melting Pt: 822°C Most reactive lanthanide element
CARD 88 • BACK Samarium (Sm) • Z=62
👅 Can You Lick It?
HEAT-PROOF ALLOY! Samarium-Cobalt magnets in Fender electric guitar pickups withstand sweaty gig abuse. Ingestion of soluble salts causes metallic nausea.
Puzzle Spec:
Lanthanide tray. Sits between Promethium (Pm) and Europium (Eu). High-temperature notch.
💡 Fact: Samarium control rods capture stray thermal neutrons in nuclear submarines!
Melting Pt: 1072°C Density: 7.52 g/cm³
CARD 93 • BACK Osmium (Os) • Z=76
👅 Can You Lick It?
HEAVIEST METAL ON EARTH! A gallon jug of osmium weighs 188 lbs! Solid metal is noble and bio-inert, but osmium tetroxide vapor (\(OsO_4\)) causes lethal lung damage!
Puzzle Spec:
Period 6, Group 8. Sits beneath Ruthenium (Ru) and left of Iridium (Ir). Ultra-dense weighted tile.
💡 Fact: Osmium's blue-gray metallic tint is unique among transition metals!
Melting Pt: 3033°C Density: 22.59 g/cm³ (World record)
CARD 92 • BACK Rhenium (Re) • Z=75
👅 Can You Lick It?
SUPERALLOY IMMUNITY! Pure rhenium metal does not react with stomach acids or saliva. 70% of global production goes directly into combustion turbine blades!
Puzzle Spec:
Period 6, Group 7. Sits beneath Technetium (Tc) and left of Osmium (Os). Refractory tab.
💡 Fact: Has the 3rd highest melting point (3,186°C) of all elements, behind carbon & tungsten!
Melting Pt: 3186°C Density: 21.02 g/cm³
CARD 91 • BACK Tantalum (Ta) • Z=73
👅 Can You Lick It?
PERFECTLY BIO-INERT! Human tissue grows seamlessly around tantalum mesh implants without inflammation or allergic rejection. Safe to touch and lick!
Puzzle Spec:
Period 6, Group 5. Sits right below Niobium (Nb) and left of Tungsten (W).
💡 Fact: Tantalum electrolytic capacitors store electrical charges inside all modern smartphones!
Melting Pt: 3017°C Density: 16.69 g/cm³
CARD 96 • BACK Oganesson (Og) • Z=118
👅 Can You Lick It?
CANNOT EXIST LONG ENOUGH! Og-294 alpha decays with a half-life of ~700 microseconds! Relativistic electron effects predict it might actually be a solid at room temperature!
Puzzle Spec:
Period 7, Group 18. The ultimate bottom-right corner cornerstone tile of the periodic table!
💡 Fact: Only the second element named after a living person at the time of naming!
Half-life: 0.7 ms Synthesized in Dubna, Russia
CARD 95 • BACK Thorium (Th) • Z=90
👅 Can You Lick It?
RADIOACTIVE HEAVY METAL! Th-232 has a 14-billion-year half-life. Swallowed thorium accumulates in bones, delivering decades of cancer-causing alpha particle bombardment!
Puzzle Spec:
Actinide series (Period 7 f-block). Sits between Actinium (Ac) and Protactinium (Pa).
💡 Fact: Thorium is 3–4× more abundant than uranium and cannot melt down in molten-salt reactors!
Melting Pt: 1750°C Half-life: 14.05 billion yrs
CARD 94 • BACK Iridium (Ir) • Z=77
👅 Can You Lick It?
EXTREME PRECIOUS NOBILITY! Unreactive noble metal; resists molten acids up to 2,000°C. Completely safe to touch, lick, and wear. Used for spark plug electrodes!
Puzzle Spec:
Period 6, Group 9. Sits between Osmium (Os) and Platinum (Pt), below Rhodium (Rh).
💡 Fact: An asteroid packed with iridium slammed into Earth 66M yrs ago, ending the dinosaurs!
Melting Pt: 2446°C Density: 22.56 g/cm³
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
Card 103 • Front Completes the Actinide Drawer
#104 267 u
Tile P7 • G4
Rf Rutherfordium Transactinide #1
Super-Hafnium 1.3h Half-life
☢️ DECAYS BEFORE TASTE Tier 5
The very first transactinide element! Sits right below Hafnium (Hf) in Group 4. Named for nuclear model pioneer Ernest Rutherford.
Card 104 • Front First element of the bottom row d-block
#105 270 u
Tile P7 • G5
Db Dubnium Cold War Joint
Super-Tantalum 28h Half-life
☢️ RELATIVISTIC INSTABILITY Tier 5
Named after Dubna, Russia, where the Joint Institute for Nuclear Research discovered several transuranic elements!
Card 105 • Front Formerly named Hahnium (Hn)
#106 269 u
Tile P7 • G6
Sg Seaborgium Super-Tungsten
Living Legend 14 min Half-life
☢️ ACCELERATOR-ONLY ATOMS Tier 5
Named for chemist Glenn Seaborg while he was still alive! Sits directly beneath Tungsten (W) in Group 6.
Card 106 • Front Forms hexacarbonyl like tungsten
#107 270 u
Tile P7 • G7
Bh Bohrium Quantum Honor
Niels Bohr 61s Half-life
☢️ VOLATILE GAS TRANSIENT Tier 5
Named for quantum physicist Niels Bohr. Group 7 cousin of Rhenium. Forms volatile \(BhO_3Cl\) gas in micro-detectors!
Card 107 • Front Synthesized in Darmstadt, Germany
#108 269 u
Tile P7 • G8
Hs Hassium Super-Osmium
HsO₄ Gas 10s Half-life
☠️ LETHAL FUMING TETROXIDE Tier 5
Group 8 cousin of Osmium. Volatilizes into \(HsO_4\) gas; if produced in macroscopic amounts, breathing it would be immediately fatal!
Card 108 • Front Named for German state Hesse (Hassia)
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Superheavy Finale • Cards 97–108 Backs
Page 2 • Backs (Mirrored)
Aligns to Page 1 when printed double-sided
CARD 99 • BACK Einsteinium (Es) • Z=99
👅 Can You Lick It?
SELF-DESTRUCTIVE RADIATION! Releases ~1,000 watts of thermal heat per gram from radioactive alpha decay! Glowing eerie blue light, it would vaporize oral tissues instantly.
Puzzle Spec:
Actinide series (f-block). Sits right between Californium (Cf) and Fermium (Fm). Warning bevel.
💡 Fact: Secretly identified by Albert Ghiorso in fallout gathered by drone aircraft in 1952!
Half-life: 20.47 days (Es-253) Melting Pt: 860°C
CARD 98 • BACK Californium (Cf) • Z=98
👅 Can You Lick It?
FATAL NEUTRON SHOWER! Spontaneous nuclear fission fires showers of penetrating neutrons that rip through internal organs, destroying DNA. Never touch without 1-meter water shielding!
Puzzle Spec:
Actinide series. Sits between Berkelium (Bk) and Einsteinium (Es). Features high-hazard interlock tab.
💡 Fact: Used in deep oil well logging tools to analyze subterranean rock strata!
Cost: ~$27 Million per gram Half-life: 2.64 yrs (Cf-252)
CARD 97 • BACK Berkelium (Bk) • Z=97
👅 Can You Lick It?
DO NOT CONSUME! Concentrates in bone tissue, delivering persistent low-energy beta radiation that replaces red marrow with fibrotic lesions. Only produced in Oak Ridge High Flux Reactor!
Puzzle Spec:
Actinide series. Sits directly between Curium (Cm) and Californium (Cf). Lower drawer connector.
💡 Fact: Over 1 gram of berkelium was specially purified to synthesize Tennessine (117)!
Melting Pt: 986°C Density: 14.78 g/cm³
CARD 102 • BACK Nobelium (No) • Z=102
👅 Can You Lick It?
VANISHES IN AN HOUR! Nobelium-259 decays via alpha emission with a 58-minute half-life. Any trace amount synthesized on foil vanishes into daughter isotopes before inspection!
Puzzle Spec:
Penultimate actinide tile. Sits between Mendelevium (Md) and Lawrencium (Lr).
💡 Fact: Its discovery was initially claimed in Sweden in 1957 before confirmation at Berkeley!
Half-life: 58 min Divalent state (\(No^{2+}\)) is unusually stable
CARD 101 • BACK Mendelevium (Md) • Z=101
👅 Can You Lick It?
COUNTABLE ATOMS ONLY! Only a few hundred atoms exist at any time. Too few to ever touch your tongue, but their alpha decays would ionize every enzyme they contacted!
Puzzle Spec:
Actinide series. Sits between Fermium (Fm) and Nobelium (No). Honorific milestone engraving.
💡 Fact: First element beyond 100! Announced in 1955 at UC Berkeley's 60-inch cyclotron.
Half-life: 51.5 days (Md-258) Actinide contraction champion
CARD 100 • BACK Fermium (Fm) • Z=100
👅 Can You Lick It?
FALLOUT RECORD BREAKER! Discovered inside 200 tons of Pacific coral dust after the "Ivy Mike" thermonuclear test. Swallowing fermium delivers destructive alpha irradiation!
Puzzle Spec:
Actinide series. Sits right between Einsteinium (Es) and Mendelevium (Md). Milestone tile #100.
💡 Fact: No macroscopic sample of metallic fermium has ever been seen by human eyes!
Half-life: 100.5 days (Fm-257) Melting Pt: 1527°C
CARD 105 • BACK Dubnium (Db) • Z=105
👅 Can You Lick It?
SYNTHETIC PHANTOM! Half-life of Db-268 is ~28 hours. Undergoes spontaneous nuclear fission. Chemistry experiments must be executed automatically using robotics!
Puzzle Spec:
Period 7, Group 5. Connects directly below Tantalum (Ta) and between Rutherfordium (Rf) and Seaborgium (Sg).
💡 Fact: Americans proposed "Hahnium" while Soviets claimed "Nielsbohrium" during the naming war!
Half-life: 28 hours (Db-268) Forms \(DbCl_5\) volatile vapor
CARD 104 • BACK Rutherfordium (Rf) • Z=104
👅 Can You Lick It?
FIRST TRANSACTINIDE! Forms covalent \(RfCl_4\) chloride gas. Alpha decay shatters surrounding lattice atoms; never exists in large enough bulk to taste!
Puzzle Spec:
Period 7, Group 4. Sits directly below Hafnium (Hf) and right of Lawrencium (Lr). Main board return tile.
💡 Fact: Confirmed in 1969 by bombarding Californium-249 with Carbon-12 ions!
Half-life: 1.3 hours (Rf-267) Relativistic 7s electron contraction
CARD 103 • BACK Lawrencium (Lr) • Z=103
👅 Can You Lick It?
ACTINIDE DRAWER TERMINUS! Extreme alpha emitter. Relativistic physics gives it a \(7s^2 7p_{1/2}\) electron valence, acting surprisingly like a p-block metal!
Puzzle Spec:
Far right corner of the Actinide bottom tray. Sits right below Lutetium (Lu).
💡 Fact: First created in 1961 by blasting Californium targets with Boron ions!
Half-life: 11 hours (Lr-266) Lowest ionization energy in actinide row
CARD 108 • BACK Hassium (Hs) • Z=108
👅 Can You Lick It?
TETROXIDE TERROR! Reacts with oxygen to produce volatile \(HsO_4\). Like osmium tetroxide, it would destroy eye corneas and alveoli, but with deadly radioactivity added!
Puzzle Spec:
Period 7, Group 8. Sits directly under Osmium (Os) and between Bohrium (Bh) and Meitnerium (Mt).
💡 Fact: First synthesized in 1984 by GSI in Darmstadt using Lead-208 and Iron-58!
Half-life: ~10 seconds (Hs-269) Density: ~27–29 g/cm³ (predicted)
CARD 107 • BACK Bohrium (Bh) • Z=107
👅 Can You Lick It?
GAS-PHASE ATOM! Chemists tested bohrium by reacting individual single atoms with chlorine and oxygen. Forms \(BhO_3Cl\) which condenses on detector diodes!
Puzzle Spec:
Period 7, Group 7. Sits directly below Rhenium (Re) and between Seaborgium (Sg) and Hassium (Hs).
💡 Fact: Named for Niels Bohr, whose atomic model won the 1922 Nobel Prize!
Half-life: 61 seconds (Bh-270) Group 7 transition metal
CARD 106 • BACK Seaborgium (Sg) • Z=106
👅 Can You Lick It?
TUNGSTEN HEAVYWEIGHT! Reacts with carbon monoxide to form \(Sg(CO)_6\), confirming it behaves as tungsten's true chemical cousin before spontaneously fissioning!
Puzzle Spec:
Period 7, Group 6. Sits directly under Tungsten (W) and between Dubnium (Db) and Bohrium (Bh).
💡 Fact: Glenn Seaborg co-discovered 10 transuranic elements (Pu, Am, Cm, Bk, Cf, Es, Fm, Md, No, Sg)!
Half-life: 14 min (Sg-269) Alpha & spontaneous fission decay
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
3D Periodic Puzzle Companion • Periodic Table Climax • Cards 109–118 & Masters Fronts
Page 3 • Fronts (Cards 109–118 & Key)
3×4 Mini Tiles • Cut along dashed borders
#109 278 u
Tile P7 • G9
Mt Meitnerium Fission Heroine
Lise Meitner 0.72s Half-life
☢️ SUB-SECOND COLLAPSE Tier 5
Named for Lise Meitner, who co-discovered nuclear fission! Group 9 cousin of Iridium. Decays via alpha cascade in < 1 second.
Card 109 • Front First woman honored exclusively on table
#110 281 u
Tile P7 • G10
Ds Darmstadtium Super-Platinum
GSI City 12.7s Half-life
☢️ RELATIVISTIC NOBILITY Tier 5
Group 10 sister of Platinum and Nickel. Relativistic electron effects predict it would be a noble, unreactive silvery super-metal!
Card 110 • Front Named for Darmstadt, Germany
#111 282 u
Tile P7 • G11
Rg Roentgenium Super-Gold
X-Ray Pioneer 100s Half-life
☢️ FORBIDDEN COINAGE METAL Tier 5
Heaviest coinage metal! Sits below Gold (Au) in Group 11. Named for Wilhelm Röntgen, discoverer of X-rays in 1895.
Card 111 • Front Bismuth target bombarded by Nickel
#112 285 u
Tile P7 • G12
Cn Copernicium Volatile Metal
Heliocentric 30s Half-life
☢️ VAPORIZES LIKE NOBLE GAS Tier 5
Super-Mercury! Relativistic contraction of 7s electrons makes it so unreactive that it may be a volatile gas/liquid at room temp!
Card 112 • Front Named for astronomer Nicolaus Copernicus
#113 286 u
Tile P7 • G13
Nh Nihonium Rising Sun
RIKEN Tokyo 10s Half-life
☢️ FIRST ASIAN SYNTHESIS Tier 5
First element discovered in Asia! Sits below Thallium in Group 13. Created by firing Zinc-70 ions into Bismuth-209 targets.
Card 113 • Front Named after Nihon (Japan)
#114 289 u
Tile P7 • G14
Fl Flerovium Island Gateway
Magic Shell 2s Half-life
☢️ SUPER-LEAD ISLAND ANCHOR Tier 5
Group 14 sister of Lead! Lies at the threshold of the theoretical "Island of Stability" where magic nuclear shells slow down decay.
Card 114 • Front Named for Flerov Laboratory of Nuclear Reactions
#115 290 u
Tile P7 • G15
Mc Moscovium Super-Bismuth
Dubna Collider 220ms Half-life
☢️ RAPID ALPHA DETONATION Tier 5
Group 15 superheavy pnictogen. Created by bombarding Americium-243 targets with Calcium-48 beams. Collapses in 0.22 seconds!
Card 115 • Front Named in honor of Moscow Oblast
#116 293 u
Tile P7 • G16
Lv Livermorium Super-Polonium
LLNL Target 60ms Half-life
☢️ MILLISECOND CHALCOGEN Tier 5
Group 16 homologue of Polonium and Tellurium. Jointly discovered by Lawrence Livermore (USA) and Dubna (Russia).
Card 116 • Front Named for Lawrence Livermore National Lab
#117 294 u
Tile P7 • G17
Ts Tennessine Heavy Halogen
Oak Ridge Target 51ms Half-life
☢️ SEMICONDUCTING HALOGEN Tier 5
Heaviest halogen known! Relativistic spin-orbit effects predict it forms a metallic, dark volatile solid rather than a diatomic gas.
Card 117 • Front Named for Tennessee (Oak Ridge & Vanderbilt)
#118 294 u
Tile P7 • G18
Og Oganesson Periodic Finale
Element 118 0.7ms Half-life
☢️ CORNERSTONE FINALE Tier 5
Final element on the periodic table! Completes Period 7 and Group 18. Smudged electron cloud predicts it behaves as a solid!
Card 118 • Front Named for Yuri Oganessian
MASTER KEY A Nuclear Physics Map
Island of Stability
Theoretical region around \(Z = 114, 120, 126\) and \(N = 184\) where superheavy nuclei resist spontaneous fission!
Magic Numbers: 2, 8, 20, 28, 50, 82, 114, 126
Next Target: Element 119 (Ununennium)
Frontier Physics Tile Oak Ridge • Dubna • RIKEN • GSI
MASTER KEY B 118/118 Complete
Table Master Trophy
Congratulations! All 118 elemental puzzle tiles from Hydrogen (#1) to Oganesson (#118) are fully documented & cataloged!
Total Elements: 118 / 118 Classified
Lickability Safety: Lab Protocols Mastered!
Element Explorer Lab Periodic Perfection Achieved
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Periodic Table Climax • Cards 109–118 & Masters Backs
Page 4 • Backs (Mirrored)
Aligns to Page 3 when printed double-sided
CARD 111 • BACK Roentgenium (Rg) • Z=111
👅 Can You Lick It?
DO NOT CONSUME COINAGE RADIATION! Unlike golden coins that can be safely bitten, roentgenium decays by alpha emission within minutes, leaving high-energy radiation damage!
Puzzle Spec:
Period 7, Group 11. Sits directly below Gold (Au) and between Darmstadtium (Ds) and Copernicium (Cn).
💡 Fact: Relativistic effects make roentgenium's chemical bonding even more noble than gold!
Half-life: ~100s (Rg-282) Density: ~28.7 g/cm³
CARD 110 • BACK Darmstadtium (Ds) • Z=110
👅 Can You Lick It?
HIGH-ENERGY ALPHA BURST! Ds-281 decays with a half-life of 12.7 seconds. Macroscopic amounts would release lethal heat and radiation into biological tissue instantly!
Puzzle Spec:
Period 7, Group 10. Sits directly below Platinum (Pt) and between Meitnerium (Mt) and Roentgenium (Rg).
💡 Fact: Synthesized by fusing heavy Lead-208 with Nickel-62 in a heavy-ion accelerator!
Half-life: 12.7 seconds Superheavy platinum group
CARD 109 • BACK Meitnerium (Mt) • Z=109
👅 Can You Lick It?
GONE IN THREE QUARTERS OF A SECOND! Its 0.72-second half-life prevents any human contact. Emits high-energy alpha particles during decay down to Dubnium!
Puzzle Spec:
Period 7, Group 9. Sits below Iridium (Ir) and between Hassium (Hs) and Darmstadtium (Ds).
💡 Fact: First synthesized in 1982 in Germany; only 1 single atom was detected on first run!
Half-life: 0.72 seconds (Mt-278) Predicted density: ~37.4 g/cm³
CARD 114 • BACK Flerovium (Fl) • Z=114
👅 Can You Lick It?
THE MAGIC NUMBER MYSTERY! With proton number Z=114, its nuclear shell is partially closed. Ingestion would cause lethal heavy metal poisoning plus acute radiation burns!
Puzzle Spec:
Period 7, Group 14. Sits directly below Lead (Pb) and between Nihonium (Nh) and Moscovium (Mc).
💡 Fact: Exhibits surprising gas-like volatility, interacting weakly with gold surfaces!
Half-life: ~2 seconds (Fl-289) Boiling point estimated ~-60°C to 150°C
CARD 113 • BACK Nihonium (Nh) • Z=113
👅 Can You Lick It?
DECADE-LONG QUEST ATOM! Japanese researchers spent over 9 years bombarding targets before confirming 3 unambiguous decay chains! Swallowing it causes fatal alpha radiation damage.
Puzzle Spec:
Period 7, Group 13. Sits directly below Thallium (Tl) and between Copernicium (Cn) and Flerovium (Fl).
💡 Fact: Discovered under lead researcher Kosuke Morita at RIKEN Nishina Center!
Half-life: 10 seconds (Nh-286) Post-transition metal candidate
CARD 112 • BACK Copernicium (Cn) • Z=112
👅 Can You Lick It?
VOLATILE METALLIC GAS! Relativistic 7s closed-shell effects make it boil at low temperatures. Inhaling its vapors delivers intense ionizing alpha radiation directly to lung alveoli!
Puzzle Spec:
Period 7, Group 12. Sits directly below Mercury (Hg) and between Roentgenium (Rg) and Nihonium (Nh).
💡 Fact: Named after Copernicus, who placed the Sun at the center of the solar system!
Half-life: ~30 seconds (Cn-285) Boiling point: ~67°C to 84°C
CARD 117 • BACK Tennessine (Ts) • Z=117
👅 Can You Lick It?
METALLIC SUPER-HALOGEN! Unlike toxic chlorine or iodine crystals, tennessine's valence electrons are so relativistic that it acts more like a post-transition metal before alpha decaying in 50 ms!
Puzzle Spec:
Period 7, Group 17. Sits directly under Astatine (At) and left of Oganesson (Og). Halogen corner key.
💡 Fact: Required 252 days of nuclear reactor bombardment to synthesize its target!
Half-life: 51 ms (Ts-294) Officially recognized by IUPAC in 2016
CARD 116 • BACK Livermorium (Lv) • Z=116
👅 Can You Lick It?
SUPERHEAVY CHALCOGEN TOXIN! Like polonium, livermorium has high alpha specific activity. A single milligram would generate lethal internal alpha radiation poisoning!
Puzzle Spec:
Period 7, Group 16. Sits directly under Polonium (Po) and between Moscovium (Mc) and Tennessine (Ts).
💡 Fact: First produced in 2000 by bombarding Curium-248 with Calcium-48 ions!
Half-life: ~60 ms (Lv-293) Predicted density: ~12.9 g/cm³
CARD 115 • BACK Moscovium (Mc) • Z=115
👅 Can You Lick It?
DO NOT CONSUME SUPERHEAVIES! Decays in a fraction of a second into Nihonium via alpha emission. Emits blistering ionizing energy that destroys cellular membranes!
Puzzle Spec:
Period 7, Group 15. Sits right under Bismuth (Bi) and between Flerovium (Fl) and Livermorium (Lv).
💡 Fact: Mentioned in 1980s UFO folklore (as "Element 115") decades before actual synthesis!
Half-life: 220 ms (Mc-290) Alpha decay chain champion
MASTER B • BACK Classroom Lab Certificate
🏆 3D Periodic Puzzle Mastery
You have assembled and classified every known building block of the physical universe! From primordial Hydrogen to accelerator-born Oganesson, you know what to lick, touch, and avoid!
Safety Level Mastered:
Tier 1 (Safe) to Tier 5 (Lethal Extreme). Total tiles in set: 118 Elements + 2 Master Keys = 120 Cards!
💡 Fact: 94 elements occur naturally; 24 are synthetic creations of human technology!
Element Explorer Lab Verified Periodic Chemistry
MASTER A • BACK Nuclear Shell Theory
⚛️ Why an "Island"?
Normally, heavier nuclei fission in microseconds due to proton electrostatic repulsion. But when protons and neutrons completely fill nuclear shells, binding energy spikes, extending lifetimes!
The Unreached Peak:
The true center of the island is predicted at \(N = 184\). Modern colliders lack enough neutron-rich projectiles to reach it yet!
💡 Fact: Nuclei at the island's center might survive for years, allowing real chemical glassware experiments!
Predicted Z: 114, 120, 126 Glenn Seaborg Theory (1960s)
CARD 118 • BACK Oganesson (Og) • Z=118
👅 Can You Lick It?
CANNOT EXIST LONG ENOUGH! Og-294 alpha decays with a half-life of ~0.7 milliseconds (700 microseconds). Only 5 or 6 individual atoms have ever existed on Earth simultaneously!
Puzzle Spec:
Period 7, Group 18. The ultimate bottom-right cornerstone tile! Anchors the entire 118-element periodic grid.
💡 Fact: Named for academician Yuri Oganessian, world leader in superheavy element research!
Half-life: 0.7 ms (Og-294) Completes the 7th Period!
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
Least abundant natural lanthanide! Bombarded in nuclear reactors to create Tm-170, a battery-free portable medical X-ray source.
Card 103 • Front Greek: Thule (Mythical North)
#70 173.0 u
Tile Lanthanide
Yb Ytterbium Atomic Ticker
Optical Clock Stress Gauge
⚠️ MILD TOXICITY / SKIN IRRITANT Tier 2
Ytterbium optical lattice atomic clocks are the most accurate on Earth—losing less than 1 second in the entire age of the universe!
Card 104 • Front 4th element named for Ytterby village
#71 175.0 u
Tile Lanthanide
Lu Lutetium Lanthanide Fin
PET Detectors Hardest f-Metal
👅 INERT DENSE METAL Tier 1
Heaviest and hardest of all lanthanides! Cerium-doped lutetium oxyorthosilicate crystals detect positrons in hospital PET scanners.
Card 105 • Front Latin: Lutetia (Ancient Roman Paris)
#72 178.5 u
Tile P6 • G4
Hf Hafnium Reactor Shield
Sub Control Rods Chip Insulators
👅 BIO-INERT SOLID / DUST BURNS Tier 1
Absorbs neutrons relentlessly without expanding or weakening. Hafnium oxide gates enabled modern nanometer computer microprocessors!
Card 106 • Front Latin: Hafnia (Copenhagen, Denmark)
#89 227 u
Tile Actinide
Ac Actinium Blue Glow Anchor
Cherenkov Blue Alpha Cancer Gun
☢️ 150× MORE RADIOACTIVE THAN RADIUM Tier 5
Glows with a ghostly blue light in darkness! Ac-225 binds to tumor-seeking antibodies to blast cancer cells with targeted alpha hits.
Card 107 • Front Greek: Aktis (Ray of Light)
#91 231.0 u
Tile Actinide
Pa Protactinium Ocean Clock
Ocean Sediments Dense Toxic Alpha
☢️ DEADLY ALPHA + BONE CANCER Tier 5
One of the rarest naturally occurring elements! Swallowed protactinium deposits into kidneys and bone, delivering intense alpha damage.
Card 108 • Front Greek: Protos Aktis (First Beam)
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Final Table Edition • Cards 97–108 Backs
Page 2 • Backs (Mirrored)
Aligns to Page 1 when printed double-sided
CARD 99 • BACK Terbium (Tb) • Z=65
👅 Can You Lick It?
SURPRISINGLY BENIGN! Solid terbium has low toxicity. Used in trichromatic fluorescent lamps to emit green light. Do not ingest metallic dust which causes lung irritation!
Puzzle Spec:
Lanthanide pull-out tray. Sits between Gadolinium (Gd) and Dysprosium (Dy). Acoustic vibration notch.
💡 Fact: Terfenol-D can change shape 1000× faster than any motor piezoelectric ceramic!
Melting Pt: 1356°C Density: 8.23 g/cm³
CARD 98 • BACK Promethium (Pm) • Z=61
👅 Can You Lick It?
HIGH DANGER BETA EMITTER! Promethium-147 decays with a 2.6-year half-life into Samarium-147, releasing piercing beta particles that damage gastrointestinal lining!
Puzzle Spec:
Lanthanide tray gap filler. Sits between Neodymium (Nd) and Samarium (Sm). Marked with radiation hazard badge.
💡 Fact: Only 500–600 grams of promethium naturally exist across Earth's entire crust!
Melting Pt: 1042°C Half-life: 2.62 yrs (Pm-147)
CARD 97 • BACK Praseodymium (Pr) • Z=59
👅 Can You Lick It?
SAFE IN GLASS FORM! Didymium protective goggles contain praseodymium to block retinal-damaging UV & yellow flares. Pure metal forms green corrosion in air.
Puzzle Spec:
Lanthanide tray. Positioned between Cerium (Ce) and Neodymium (Nd). Twin-key interlock peg.
💡 Fact: Mixed with magnesium to build ultra-tough, high-temperature aircraft engine casings!
Melting Pt: 931°C Density: 6.77 g/cm³
CARD 102 • BACK Erbium (Er) • Z=68
👅 Can You Lick It?
SAFE PINK SUNGLASSES! Pink-tinted sunglasses use erbium oxide without toxicity. Licking the solid metal produces no taste or reaction; dust is mildly irritant.
Puzzle Spec:
Lanthanide tray. Sits between Holmium (Ho) and Thulium (Tm). Laser optical fiber channel groove.
💡 Fact: Erbium lasers operate at 2,940 nm—precisely matching water absorption in dental surgery!
Melting Pt: 1529°C Density: 9.07 g/cm³
CARD 101 • BACK Holmium (Ho) • Z=67
👅 Can You Lick It?
INERT METAL BAR! Low systemic toxicity. In solid bar form, holmium does not react with skin or saliva. In medical surgery, holmium lasers pulverize gallstones!
Puzzle Spec:
Lanthanide tray. Positioned between Dysprosium (Dy) and Erbium (Er). Magnetic pole guide groove.
💡 Fact: Used in IBM quantum computers to build single-atom magnetic data storage bits!
Melting Pt: 1474°C Density: 8.80 g/cm³
CARD 100 • BACK Dysprosium (Dy) • Z=66
👅 Can You Lick It?
KEEP IN THE MOTOR! Plated magnets containing dysprosium are safe to handle. Licking bare chemical salts causes gastrointestinal irritation.
Puzzle Spec:
Lanthanide tray. Sits between Terbium (Tb) and Holmium (Ho). Magnetic thermal stabilizer bevel.
💡 Fact: Cermet control rods made of dysprosium absorb neutrons without swelling in nuclear reactors!
Melting Pt: 1412°C Density: 8.55 g/cm³
CARD 105 • BACK Lutetium (Lu) • Z=71
👅 Can You Lick It?
EXPENSIVE BIO-INERTIA! At $10,000/kg, lutetium is purely non-toxic in metal ingot form. Radioactive Lu-177 peptide therapy destroys prostate cancer tumors!
Puzzle Spec:
Lanthanide terminal tile (f-block end). Sits right beside Ytterbium (Yb) and connects to Hafnium (Hf).
💡 Fact: Lanthanide contraction makes lutetium atoms the smallest and densest of the rare earths!
Melting Pt: 1663°C Density: 9.84 g/cm³
CARD 104 • BACK Ytterbium (Yb) • Z=70
👅 Can You Lick It?
LOW HAZARD IN AIR! Ytterbium slowly tarnishes with moisture. Licking the metal leaves a mild alkaline taste. Used in earthquake stress sensors under tectonic plates!
Puzzle Spec:
Lanthanide tray. Positioned between Thulium (Tm) and Lutetium (Lu). Dual-tab lattice slot.
💡 Fact: Electrical resistance of ytterbium jumps 10× under high pressure, making it an ideal detonation gauge!
Melting Pt: 824°C Density: 6.90 g/cm³
CARD 103 • BACK Thulium (Tm) • Z=69
👅 Can You Lick It?
SCARCE & SAFE IN BULK! Naturally stable Tm-169 has low toxicity. Once activated in a nuclear reactor into Tm-170, it emits piercing 84 keV X-rays for battlefield surgery!
Puzzle Spec:
Lanthanide tray. Sits between Erbium (Er) and Ytterbium (Yb). Rare earth blue luminescent notch.
💡 Fact: Euro banknotes use thulium blue fluorescence as an impossible-to-forge counterfeit feature!
Melting Pt: 1545°C Density: 9.32 g/cm³
CARD 108 • BACK Protactinium (Pa) • Z=91
👅 Can You Lick It?
EXTREME INTERNAL TOXIN! Alpha decay makes swallowed protactinium as dangerous as plutonium. Decays into Actinium-227. Deep ocean sediments date ice ages via Pa-231!
Puzzle Spec:
Actinide tray. Positioned between Thorium (Th) and Uranium (U). Nuclear fuel intermediate notch.
💡 Fact: In 1961, the UK Atomic Energy Authority spent $500,000 processing 60 tons of nuclear waste to extract just 125 grams of Pa!
Melting Pt: 1568°C Half-life: 32,760 yrs (Pa-231)
CARD 107 • BACK Actinium (Ac) • Z=89
👅 Can You Lick It?
DEADLY BLUE GLOW! 150 times more radioactive than radium. It ionizes surrounding air into an electric blue aura. Ingestion destroys bone marrow within days!
Puzzle Spec:
Actinide series cornerstone (Period 7 f-block lead tile). Sits directly beneath Lanthanum (La).
💡 Fact: Ac-225 emits 4 powerful alpha particles during its decay chain, obliterating cancer DNA!
Melting Pt: 1050°C Half-life: 21.77 yrs (Ac-227)
CARD 106 • BACK Hafnium (Hf) • Z=72
👅 Can You Lick It?
TOTALLY BIO-INERT! Solid metal does not react with body tissues or acids. But finely powdered hafnium shavings spontaneously ignite in room air!
Puzzle Spec:
Period 6, Group 4. Sits directly below Zirconium (Zr) and left of Tantalum (Ta). Nearly identical size to Zr.
💡 Fact: Hafnium carbide (\(HfC\)) has the highest melting point of any binary compound (3,890°C)!
Melting Pt: 2233°C Density: 13.31 g/cm³
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
3D Periodic Puzzle Companion • Superheavy Finale • Cards 109–120 Fronts
Page 3 • Fronts (Cards 109–120)
3×4 Mini Tiles • Cut along dashed borders
#93 237 u
Tile Actinide
Np Neptunium First Transuranic
Pre-Plutonium 2.14M yr Half-life
☢️ ALPHA IRRADIATION DOOM Tier 5
First synthetic element heavier than uranium! Highly toxic radioactive heavy metal that accumulates in bones and destroys marrow.
Card 109 • Front Named after planet Neptune
#96 247 u
Tile Actinide
Cm Curium Curie Tribute
Mars Rover APXS Purple Self-Glow
☢️ GLOWS PURPLE FROM ALPHA HEAT Tier 5
Emits so much alpha heat that a gram boils water spontaneously! Power source for Mars Curiosity rover's rock sensor.
Card 110 • Front Honoring Marie & Pierre Curie
#97 247 u
Tile Actinide
Bk Berkelium California Seed
Beam Target Made Tennessine
☢️ ULTRA-RADIOACTIVE TARGET Tier 5
Synthesized by bombarding americium with alpha particles. 22 milligrams of Bk-249 were used to discover element 117 (Tennessine)!
Card 111 • Front Named after UC Berkeley, California
#100 257 u
Tile Actinide
Fm Fermium Century Mark
H-Bomb Debris Ivy Mike 1952
☢️ HEAVIEST NEUTRON CAPTURE Tier 5
Discovered in the radioactive coral debris of the first thermonuclear hydrogen bomb test! Heaviest element made via neutron capture.
Card 112 • Front Named after physicist Enrico Fermi
#101 258 u
Tile Actinide
Md Mendelevium Father's Name
One Atom Time 17 Atoms Made
☢️ VAPORIZES ATOMICALLY Tier 5
Named for periodic table inventor Dmitri Mendeleev! First element produced one atom at a time by shooting alpha particles at einsteinium.
Card 113 • Front Half-life: 51 days (Md-258)
#102 259 u
Tile Actinide
No Nobelium Dynamite Titan
Alfred Nobel 58 Min Half-life
☢️ RADIOACTIVE TRANSIENCE Tier 5
Named after Alfred Nobel, inventor of dynamite. Behaves unexpectedly like alkaline earth calcium due to full 5f¹⁴ shell closure!
Card 114 • Front Synthesized in Dubna & Berkeley
#103 266 u
Tile Actinide End
Lr Lawrencium Actinide Fin
Cyclotron King Final f-Block
☢️ DECAYS IN SECONDS Tier 5
Final member of the actinide series! Named for Ernest Lawrence, inventor of the cyclotron accelerator that unlocked synthetic elements.
Card 115 • Front Half-life: 11 hours (Lr-266)
#104 267 u
Tile P7 • G4
Rf Rutherfordium Superheavy Gate
1st Transactinide Nuclear Father
☢️ MILLISECOND SUPERHEAVY Tier 5
First element beyond the actinides! Named for Ernest Rutherford, who discovered the atomic nucleus. Decays via spontaneous nuclear fission.
Card 116 • Front Cold War discovery rivalry (Dubna vs Berkeley)
#106 269 u
Tile P7 • G6
Sg Seaborgium Living Legend
Glenn Seaborg Tungsten Cousin
☢️ VAPORIZES BEFORE BLINKING Tier 5
First element named after a living person! Chemically acts like tungsten, forming gaseous hexacarbonyl complexes before decaying.
Card 117 • Front Synthesized in 1974 Berkeley
#109 278 u
Tile P7 • G9
Mt Meitnerium Fission Pioneer
Lise Meitner Iridium Cousin
☢️ DECAYS IN MILLISECONDS Tier 5
Honoring Lise Meitner, who first explained nuclear fission! Created by shooting iron-58 nuclei directly into bismuth targets in Darmstadt, Germany.
Card 118 • Front Half-life: 4.5 seconds (Mt-278)
#112 285 u
Tile P7 • G12
Cn Copernicium Volatile Metal
Sun-Centered Volatile Gas/Liquid
☢️ VOLATILE SUPERHEAVY GAS Tier 5
Named for Nicolaus Copernicus! Relativistic electrons contract so strongly that copernicium may actually be a volatile gas at room temperature!
Card 119 • Front Heavier sister to Mercury
#117 294 u
Tile P7 • G17
Ts Tennessine Table Complete!
118 Completed Grand Finale
🏆 118 ELEMENTS MASTERED! Tier 5
Penultimate element 117! Synthesized via Oak Ridge National Lab berkelium. With this card, all 118 elements of the table are solved!
Card 120 • Front Complete 118-Element Master Set
Cut along outer borders of each card tile Duplex Printing: Col 1 Front ↔ Col 3 Back • Col 2 Front ↔ Col 2 Back • Col 3 Front ↔ Col 1 Back
3D Periodic Puzzle Companion • Superheavy Finale • Cards 109–120 Backs
Page 4 • Backs (Mirrored)
Aligns to Page 3 when printed double-sided
CARD 111 • BACK Berkelium (Bk) • Z=97
👅 Can You Lick It?
DEADLY RADIO-TOXIN! Ingested berkelium concentrates in the skeleton, delivering devastating continuous beta/gamma cellular destruction. Highly forbidden!
Puzzle Spec:
Actinide tray. Positioned between Curium (Cm) and Californium (Cf). High-flux reactor core tab.
💡 Fact: Over 1 billion dollars of reactor beam time was required to harvest enough Bk to make Tennessine!
Melting Pt: 986°C Half-life: 330 days (Bk-249)
CARD 110 • BACK Curium (Cm) • Z=96
👅 Can You Lick It?
SEARING RADIOACTIVE PURPLE! Decays so vigorously with alpha emissions that touching it burns flesh instantly. Microgram ingestion leads to incurable bone tumors!
Puzzle Spec:
Actinide series. Sits between Americium (Am) and Berkelium (Bk). Thermal glow luminescence finish.
💡 Fact: Powers Alpha Particle X-Ray Spectrometers aboard Mars rovers Spirit, Opportunity, and Curiosity!
Melting Pt: 1345°C Thermal output: 3 Watts/gram
CARD 109 • BACK Neptunium (Np) • Z=93
👅 Can You Lick It?
CATASTROPHIC HEAVY METAL! Np-237 delivers bone-lodging alpha radiation. Synthesized in nuclear reactors as a byproduct of uranium fission; critical mass is ~60 kg.
Puzzle Spec:
Actinide tray. Located directly between Uranium (U) and Plutonium (Pu). Gateway to synthetic transuranics.
💡 Fact: Decays over 2.14 million years to create Protactinium-233!
Melting Pt: 644°C Density: 20.45 g/cm³
CARD 114 • BACK Nobelium (No) • Z=102
👅 Can You Lick It?
INSTANT ALPHA DECAY! Only microscopic quantities exist at particle accelerator facilities. Decays with a 58-minute half-life into fermium. Completely inaccessible!
Puzzle Spec:
Actinide tray. Positioned between Mendelevium (Md) and Lawrencium (Lr). Full 5f shell closure marker.
💡 Fact: Most stable in the +2 oxidation state, unlike most other +3 trivalent actinides!
Melting Pt: 827°C Half-life: 58 min (No-259)
CARD 113 • BACK Mendelevium (Md) • Z=101
👅 Can You Lick It?
IMPOSSIBLE SINGLE ATOMS! When first synthesized in 1955, only seventeen total individual atoms were identified! Cannot accumulate in macroscopic lickable amounts.
Puzzle Spec:
Actinide tray. Sits between Fermium (Fm) and Nobelium (No). Dmitri Mendeleev tribute seal.
💡 Fact: Ghiorso connected radiation counters directly to the fire alarm bell at Berkeley to celebrate each detected atom!
Melting Pt: 827°C Synthesized via 60-inch cyclotron
CARD 112 • BACK Fermium (Fm) • Z=100
👅 Can You Lick It?
NUCLEAR FALLOUT ORIGIN! Formed in microseconds when uranium absorbed 17 neutrons during a 10.4 megaton H-bomb blast! Extreme spontaneous fission hazard.
Puzzle Spec:
Actinide tray. Positioned between Einsteinium (Es) and Mendelevium (Md). Milestone element #100 notch.
💡 Fact: Heaviest element that can ever be synthesized in a nuclear reactor!
Melting Pt: 1527°C Half-life: 100.5 days (Fm-257)
CARD 117 • BACK Seaborgium (Sg) • Z=106
👅 Can You Lick It?
FLASH REACTION VANISH! Sg-269 alpha decays with a half-life of 14 seconds. Never produced in amounts large enough to observe with the naked eye!
Puzzle Spec:
Period 7, Group 6. Sits directly below Tungsten (W) and right of Dubnium (Db). Heavy transition tab.
💡 Fact: Formed gaseous \(Sg(CO)_6\) hexacarbonyl, proving it follows periodic trends!
Half-life: 14 sec (Sg-269) Heavy transactinide metal
CARD 116 • BACK Rutherfordium (Rf) • Z=104
👅 Can You Lick It?
FISSION IN SECONDS! Rf-267 decays with a 1.3-hour half-life. Emits powerful spontaneous fission bursts that release lethal bursts of neutrons and heat!
Puzzle Spec:
Period 7, Group 4. First transactinide element. Sits directly beneath Hafnium (Hf).
💡 Fact: Was called *kurchatovium* in Soviet labs and *rutherfordium* in US labs until IUPAC resolved it!
Half-life: 1.3 hours (Rf-267) Density: 17 g/cm³ (predicted)
CARD 115 • BACK Lawrencium (Lr) • Z=103
👅 Can You Lick It?
FLASH ALPHA EMISSION! Closes out the actinide family. Only a few atoms synthesized at once; possesses lowest first ionization energy of any heavy transition metal!
Puzzle Spec:
Actinide series terminal tile. Sits right beside Nobelium (No) and connects to Rutherfordium (Rf).
💡 Fact: First element discovered using heavy-ion linear accelerators (HILAC) in 1961!
Melting Pt: 1627°C Density: 14.4 g/cm³
CARD 120 • BACK Tennessine (Ts) • Z=117
👅 Can You Lick It?
SUPERHEAVY HALOGEN! Relativistic spin-orbit coupling predicts it won't form \(Ts^-\) halide ions! Decays via alpha cascade in under 50 milliseconds!
Master Puzzle Key:
Period 7, Group 17. Sits right beside Oganesson (#118). Concludes the entire physical 118-tile periodic puzzle!
🎉 CERTIFIED MASTER: All 118 chemical elements cataloged across the 6 study card decks!
Half-life: 51 ms (Ts-294) IUPAC Approved Nov 2016
CARD 119 • BACK Copernicium (Cn) • Z=112
👅 Can You Lick It?
VOLATILE METALLIC GAS! Relativistic 7s electron contraction makes it behave like a noble gas that resists bonding! Decays via alpha emissions in 28 seconds.
Puzzle Spec:
Period 7, Group 12. Sits directly below Mercury (Hg) and Roentgenium (Rg). Volatile gas seal tab.
💡 Fact: Synthesized by fusing lead-208 with high-speed zinc-70 nuclei in Germany!
Boiling Pt: 67°C (Near gas) Half-life: 28 sec (Cn-285)
CARD 118 • BACK Meitnerium (Mt) • Z=109
👅 Can You Lick It?
VANISHES IN BLINK! Alpha decays into Bohrium in seconds. Only single atoms synthesized at a time; no macro chemical properties will ever be tasteable.
Puzzle Spec:
Period 7, Group 9. Sits directly beneath Iridium (Ir) and right of Hassium (Hs).
💡 Fact: First element named exclusively to honor a non-mythological female scientist alone!
Half-life: 4.5 sec (Mt-278) Density: 37.4 g/cm³ (predicted)
Cut along outer borders of each card tile Duplex Printing: Col 1 Back ↔ Col 3 Front • Col 2 Back ↔ Col 2 Front • Col 3 Back ↔ Col 1 Front
