The ion that is isoelectronic with CO is:

O_{2}^{-}

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N_{2}^{+}

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C N^{-}

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O_{2}^{+}

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Solution

The correct option is C $C N^{-}$
Isoelectronic species refers to the species which have same number of electrons.

$C N^{-}$ is isoelectronic with $C O$ , both have 14 electrons.

Hence, option $C$ is correct.

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Which one of the following is an example of a positive ion and negative ion that is isoelectronic with $F^{-}$ ?

Which one of the following is an example of positive ion and negative ion that is isoelectronic with $F^{-}$ ?

O^{- 2}

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