In which of the following coordination e...

In which of the following coordination entities the magnitude of `Delta_(0)` (CFSE In octahedral field) will be maximum (at. no. Co=27)?

A

`[Co(CN)_(6)]^(3-)`

B

`[Co(C_(2)O_(4))_(3)]^(3-)`

C

`[Co(H_(2)O)_(6)]^(3+)`

D

`[Co(NH_(3))_(6)]^(2+)`

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The correct Answer is:

A

`CN^(-)rarr "strong field ligand"`

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