A) 1
B) 3
C) 2
D) None of these
Correct Answer: B
Solution :
According to Hund's rule, the pairing of electrons will not occur in any orbital of a subshell unit and unless, all the available of it have one electron each. Electronic configuration of \[_{7}{{N}^{14}}=1\,{{s}^{2}},\,2{{s}^{2}},\,2{{p}_{x}}^{1}2{{p}_{y}}^{1}2{{p}_{z}}^{1}\] Hence it has 3 unpaired electron in 2p-orbital.
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