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The P-Block Elements

Question
CBSEENCH12006754

With what neutral molecule is CIO iso– electronic? 

Solution
The term valence isoelectronic is used when these molecular entities have the same number of valence electrons or a similar electron configuration, but may have a different number of atoms or a different bonding.
valence electron of  CIO. is  14= 7+6+1(negtive charge)
valence electron of ClF is 14 =7+7

ClF is isoelectronic with ClO
.