Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-numerical-Hard-Class 11
Calculate the number of electrons in an atom that can have the quantum numbers n = 4 and ms = -1/2.
A
16
B
8
C
32
D
4
Correct Answer
Option A
Detailed Explanation
For n = 4, the possible values of l are 0, 1, 2, 3. Each orbital can hold 2 electrons, one with ms = +1/2 and one with ms = -1/2. Thus, the total number of electrons with ms = -1/2 is half of the total number of electrons in the n = 4 shell, which is 32/2 = 16.
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