The isoelectronic pair is

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(D) To determine the isoelectronic pair,we calculate the total number of valence electrons for each species.
For $ClO_2^-$: $7 (Cl) + 2 	imes 6 (O)

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$ClO_2^-, ClF_2^+$

Vedclass · Answer

(D) To determine the isoelectronic pair,we calculate the total number of valence electrons for each species.
For $ClO_2^-$: $7 (Cl) + 2 	imes 6 (O) + 1 (	ext{charge}) = 20$ valence electrons.
For $ClF_2^+$: $7 (Cl) + 2 	imes 7 (F) - 1 (	ext{charge}) = 20$ valence electrons.
Since both $ClO_2^-$ and $ClF_2^+$ have $20$ valence electrons,they form an isoelectronic pair.
Therefore,the correct option is $D$.

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