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In the Iso-electronic series of metal ca...

In the Iso-electronic series of metal carbonyls, the C-O bond strength is expected to increase in the order:-

A

`[Mn(CO)_(6)]^(+) lt [Cr(CN)_(6)] lt [V(CO)_(6)]^(-)`

B

`[V(CO)_(6)]^(-) lt [Cr(CO)_(6)] lt [Mn(CO)_(6)]^(+)`

C

`[V(CO)_(6)]^(-) lt [Mn(CO)_(6)]^(+) lt [Cr(CO)_(6)]`

D

`[Cr(CO)_(6)] lt [Mn(CO)_(6)]^(+) lt [V(CO)_(6)]^(-)`

Text Solution

Verified by Experts

The correct Answer is:
D
CO bond strength is reciprocal to the extent of back donation involved in synergic bonding i.e., `M hArr CO`
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