NEET Chemistry Quantum Mechanical Model MCQ Question
For an atom with a principal quantum number n = 4, which of the following sets of quantum numbers (n, l, ml) correctly represents a possible electron configuration?
(4, 3, -2)
(4, 4, 0)
(4, 2, 3)
(4, 1, -2)
Correct Answer
Detailed Explanation
From the NCERT context, the azimuthal quantum number l can take values from 0 to n-1. For n = 4, l can be 0, 1, 2, or 3. The magnetic quantum number ml ranges from -l to +l, so for l = 3, ml can be -3 to +3. Option A is the only correct set.
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