1.

In which of the following complex ions, the magnitude of Delta_(@) (CFSE in octahedral field ) will be minimum ?

Answer»

`[CO(en)_3]^(3+)`
`[CoF_6]^(3-)`
`[Co(H_2O)_6]^(3+)`
`[Co(NH_3)_6]^(3+)`

Answer :B


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