Textbook Question
What is the maximum number of electrons that can occupy each of the following subshells? a. 3p, b. 5d, c. 2s, d. 4f.
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9. Quantum Mechanics
Quantum Numbers: Number of Electrons
Multiple Choice
How many electrons can occupy the third energy level (n = 3) of an atom?
A
6
B
8
C
18
D
32
Verified step by step guidance1
Recall that the maximum number of electrons that can occupy a given energy level (n) is given by the formula \$2n^2$.
Identify the principal quantum number for the third energy level: \(n = 3\).
Substitute \(n = 3\) into the formula: \(2 \times (3)^2\).
Calculate the value inside the parentheses first: \((3)^2 = 9\).
Multiply by 2 to find the maximum number of electrons: \(2 \times 9 = 18\).
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