Answer:
0, 1, 2, 3
General Formulas and Concepts:
Chemistry - Atomic Structure
Explanation:
Step 1: Define quantum number
Principal Energy Level n = 4
Step 2: Define ℓ
ℓ is the Angular Momentum. Its values start at 0, 1, 2, 3...
It is the Principal Energy Level n minus 1 (n - 1).
Step 3: Find
n = 4
ℓ = 4 - 1 = 3
Therefore, out angular momentum values can be 0, 1, 2, 3. These correlate to s, p, d, f sublevels.