A) \[C{{l}^{-}}\]
B) \[{{O}^{2-}}\]
C) \[N{{a}^{+}}\]
D) \[M{{g}^{2+}}\]
Correct Answer: A
Solution :
\[C{{l}^{-}}=2,\,8,\,8\] \[{{O}^{2-}}=2,\,8\] \[N{{a}^{+}}=2,\,8\] \[M{{g}^{2+}}=2,\,8\] \[C{{l}^{-}}\] contains same number of electrons in outermost and penultimate shells.You need to login to perform this action.
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