A) \[Ne,C{{l}^{-}}\]
B) \[C{{a}^{2+}},{{F}^{-}}\]
C) \[M{{g}^{2+}},{{K}^{+}}\]
D) \[{{N}^{3-}},N{{a}^{+}}\]
Correct Answer: D
Solution :
Isoelectronic species are those which have same number of electrons. Thus, \[{{N}^{3-}}(7+3=10\,\text{electrons})\] and \[N{{a}^{+}}(11-1=10\,\text{electrons})\] are isoelectronic species.
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