NEET Chemistry Quantum Numbers MCQ Question
Which of the following quantum numbers are correct for the outermost electron of sodium atom?
n = 4, l = 0, m = 0, s = +1/2
n = 3, l = 0, m = 0, s = −1/2
n = 3, l = 1, m = +1, s = +1/2
n = 3, l = 2, m = −1, s = −1/2
Correct Answer
Detailed Explanation
The outermost electron of sodium is in the 3s orbital, so n = 3, l = 0, m = 0, and s can be either +1/2 o/2.
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