A) \[N_{2}^{-}\]
B) \[N_{2}^{+}\]
C) \[C{{N}^{-}}\]
D) \[NO\]
Correct Answer: C
Solution :
Isoelectronic species are the species having same number of electrons. Number of electrons in\[~CO=6+8=14\] Number of electrons in\[~N_{2}^{-}=14+1=15\] Number of electrons in \[~N_{2}^{+}=14-1=13\] Number of electrons in \[C{{N}^{-}}=6+7+1=14\]Number of electrons in \[NO=7+8=15\] So, \[\text{C}{{\text{N}}^{-}}\]and CO are isoelectronic species.
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