A) \[N{{i}^{+2}}\]
B) \[N{{i}^{+4}}\]
C) \[C{{o}^{+3}}\]
D) None of these
Correct Answer: D
Solution :
\[F{{e}^{+2}}=1{{s}^{2}}2{{s}^{2}},2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{6}}\] \[C{{o}^{+3}}=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{6}}\] \[N{{i}^{+2}}=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{8}}\] \[N{{i}^{+4}}=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{6}}\]
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