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Among the following metal carbonyls the ...

Among the following metal carbonyls the `C-O` bond order is lowest in .

A

`[Mn(CO)_(6)]^(+)`

B

`[Fe(CO)_(5)]`

C

`[Cr(CO)_(6)]`

D

`[V(CO)_(6)]^(-)`

Text Solution

Verified by Experts

The correct Answer is:
D
An anionic carbonyl complex can delocalise more electron density to antibonding `pi`-orbital (`d pi p pi` back bonding) of CO and thus lowers the bond order.
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