The correct set of quantum numbers for the unpaired electron of chlorine atom is 

(a) n = 2, l = 1, m = 0

(b) n = 2, l = 1, m = 1

(c) n = 3, l = 1, m = 1

(d) n = 3, l = 0, m = 0

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1 Answers

Correct Option  (c) n = 3, l = 1, m = 1

Explanation:

As the electronic configuration of chlorine is 1s2 , 2s2 2p6 , 3s2 3p5 . Thus the fifth electron in the 3p subshell has quantum numbers 3,1,1, ±1/2.

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