A) \[{{K}^{+}},\,C{{l}^{-}}\]
B) \[N{{a}^{+}},\,C{{l}^{-}}\]
C) \[Na,\,Ar\]
D) \[N{{a}^{+}},\,Ar\]
Correct Answer: A
Solution :
\[{{K}^{+}}=\,1{{s}^{2}}\,2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}\] \[C{{l}^{-}}=\,1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}.\]
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