Atomic Blueprint Packet
Atomic Blueprint Review
Part 1: The Bohr Model
Name:
Date:
Resource: Bohr Model Basics
Identity: Count the Protons (p+) in the center. Protons are like an atom's DNA—they tell you who the element is!
Mass: Add Protons + Neutrons.
Charge: If Protons (+) = Electrons (-), the atom is Neutral (0).
3p+ 4n0
Lithium Example (3 Protons)
1. Analyze the Atom Below
16p+ 16n0
Identity (Element Name):
Mass Number (p + n):
Total Electrons:
Charge:
2. Identity Challenge
Find this element on your periodic table using the number of protons:
If an atom has 11 protons:
If an atom has 19 protons:
Atomic Blueprint Review
Part 2: Subatomic Table & Isotopes
Resource: Isotope Identification
Isotopes are atoms of the same element.
They must have the same number of protons.
They have a different number of neutrons.
Use the table below to answer the questions.
| Atom | Protons | Neutrons | Electrons |
|---|
| X | 8 | 8 | 8 |
| Y | 7 | 7 | 7 |
| Z | 8 | 10 | 8 |
| W | 9 | 10 | 9 |
1. Which two atoms are Isotopes of the same element?
2. Explain how you chose those two atoms. (Look at the Protons column!)
3. Which atom above represents Nitrogen (Atomic Number 7)?
Atomic Blueprint Review
Part 3: Valence & Periodic Blocks
Resource: Valence Count
Valence electrons are in the outermost shell. Use the group number trick!
Grp 1:
1
Grp 2:
2
Grp 13:
3
Grp 14:
4
Grp 15:
5
Grp 16:
6
Grp 17:
7
Grp 18:
8*
TIP: For Groups 13-18, just look at the second number! (Group 14 = 4 valence)
Resource: Periodic Blocks
s max 2
d max 10
p max 6
f-block max 14
The Periodic Table is split into subshells (s, p, d, f)
1. How many valence electrons does Carbon have? (Group 14)
2. How many valence electrons does Magnesium have? (Group 2)
3. What is the maximum number of electrons that can fit in a p orbital?
4. Which block (s, p, or d) contains Oxygen and Fluorine?
Atomic Blueprint Review
Part 4: Electron Configurations
Resource: Step-by-Step Guide
Step 1: Find the Atomic Number (Total e-).
Step 2: Follow the map:
1s → 2s → 2p → 3s → 3p → 4s...
Step 3: Add the little numbers (exponents) until they hit your total!
Example: Oxygen (8e-)
1s2 2s2 2p4
(2 + 2 + 4 = 8 total)
1. Chlorine (17 electrons)
Fill in the missing exponents:
1s
2s
2p
3s
3p
2. Lithium (3 electrons)
Write the full configuration below:
3. Phosphorus (15 electrons)
Write the full configuration below:
Atomic Blueprint Review
Part 5: Shorthand & Orbitals
Noble Gas Shorthand
Save time! Start with the Noble Gas (Group 18) from the row above in brackets.
Ex: Ox (8e-) → [He] 2s2 2p4
Orbital Rules
- • Pauli Exclusion: Arrows must point opposite (↑↓).
- • Hund's Rule: Don't double up! One arrow per box first.
- • Max 2 arrows per box.
1. Abbreviated Configuration: Sodium (11e-)
(Hint: Row above ends with Neon [Ne])
[Ne]
2. Orbital Diagram: Nitrogen (7e-)
Draw your arrows (↑ or ↓) inside the boxes:
1s
2s
2p
3. Abbreviated Practice: Phosphorus (15e-)
Atomic Blueprint Review
Part 6: Final Review Challenge
Quiz Readiness Checklist:
Bohr Model Identification
Isotope Rules (Neutrons!)
Valence (Group Number Trick)
Full Configurations
s, p, d, f Capacity
Arrow Directions (↑ and ↓)
Mastery Practice
A. What is the max capacity of an "s" orbital?
B. How many valence electrons does Carbon have? (Group 14)
C. If an atom has 10 protons and 12 neutrons, what is its total mass?
D. Write the full configuration for Boron (5 electrons):
Blueprint Complete
Atomic Blueprint Answer Key
Answer Key
Part 1: The Bohr Model
Teacher Key
1. Analyze the Atom Below
16p+ 16n0
Identity:
Sulfur (S)
Mass Number:
32
Total Electrons:
16
Charge:
0
2. Identity Challenge
If an atom has 11 protons:
Sodium (Na)
If an atom has 19 protons:
Potassium (K)
Answer Key
Part 2: Subatomic Table & Isotopes
1. Which two atoms are Isotopes of the same element?
X and Z
2. Explain how you chose those two atoms.
They both have 8 Protons (same identity), but different Neutrons (X has 8, Z has 10).
3. Which atom above represents Nitrogen (Atomic Number 7)?
Atom Y
Answer Key
Part 3: Valence & Periodic Blocks
1. How many valence electrons does Carbon have?
4
2. How many valence electrons does Magnesium have?
2
3. Max electrons in a p orbital?
6
4. Which block contains Oxygen and Fluorine?
p-block
Answer Key
Part 4: Electron Configurations
1. Chlorine (17 electrons)
1s2 2s2 2p6 3s2 3p5
2. Lithium (3 electrons)
1s2 2s1
3. Phosphorus (15 electrons)
1s2 2s2 2p6 3s2 3p3
Answer Key
Part 5: Shorthand & Orbitals
1. Abbreviated Configuration: Sodium (11e-)
[Ne] 3s1
2. Orbital Diagram: Nitrogen (7e-)
↑↓
1s
↑↓
2s
↑
↑
↑
2p
3. Abbreviated Practice: Phosphorus (15e-)
[Ne] 3s2 3p3
Answer Key
Part 6: Final Review Challenge
Mastery Solutions
A. What is the max capacity of an "s" orbital?
2 Electrons
B. How many valence electrons does Carbon have?
4
C. If an atom has 10 protons and 12 neutrons, what is its total mass?
22
D. Write the full configuration for Boron (5 electrons):
1s2 2s2 2p1
