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JEE Main levelSingle correct optionDifficulty 2 of 3as136

Which set $(n, l, m_{l}, m_{s})$ can describe an electron in a 3d orbital?

A $(3, 2, - 3, + \frac{1}{2})$
B $(3, 1, 1, - \frac{1}{2})$
C $(3, 2, - 2, - \frac{1}{2})$
D $(2, 2, 0, + \frac{1}{2})$

Answer: C

3d needs

n = 3

,

l = 2

, and

m_{l}

from

- 2

to

+ 2

. Set A has

∣ m_{l} ∣ > l

, B has

l = 1

(3p), D has

l = n

which is not allowed.

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