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Among the following species, the one whi...

Among the following species, the one which causes the highest `CFSE, Delta_0` as a ligand is

A

`CN^(-)`

B

`NH_3`

C

`F^(-)`

D

`CO`

Text Solution

Verified by Experts

The correct Answer is:
D
On the basis of spectro-chemical series CO is found to be the strongest ligand among given ligands.
`CO gt CN^(-) gt NH_3^(-) gt F`
CO is the strongest ligand because it is a `sigma` donor as well as a `pi` acceptor.
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