A) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{4}}\]
B) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{2}}\]
C) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\,3{{p}^{2}}\]
D) \[1{{s}^{2}}\,2{{s}^{2}}\,2{{p}^{6}}\,3{{s}^{2}}\]
Correct Answer: D
Solution :
\[I{{E}_{2}}\,<<\,I{{E}_{3}}\] \[I{{E}_{n}}\,<<\,I{{E}_{n+1}}\] \[N=2\text{ }\left( valence\text{ }electron \right)\]
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