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Crystal field theory provides correct el...

Crystal field theory provides correct electronic distribution of central metal under surrounding ligannd field, hence it clearly explains magnetic moment, colour of a complex.
Q. Which of the following complex is high spin?

A

`K_(4)[Fe(CN)_(6)]^(-)`

B

`[PtCl_(4)]^(2-)`

C

`[CoF_(6)]^(3-)`

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
`K_(4)[Fe(CN)_(6)]`: Low spin complex: `P lt Delta_(0)`
`[PtCl_4]^(2-)`:Los spin complex: `P lt Delta_(0)`
`[CoF_(6)]^(3-)`: High spin complex: `P gt Delta_(0)`
`[Ni(NH_(3))_(6)]^(2+)`: High spin or low spini not defined.
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