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Which of the following set of quantum numbers is not allowed for an electron?

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n = 5; l = 1; m = 0; s = $+ \frac{1}{2}$

n = 4; l = 2; m = -2; s = $- \frac{1}{2}$

n = 3; l = 0; m = 0; s = $+ \frac{1}{2}$

n = 2; l = 1; m = -2; s = $- \frac{1}{2}$

answer is D.

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Detailed Solution

When l=1, m = -1, 0, +1 ;

‘m’ cannot be -2.

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