1.

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?

Answer»

`K_(4)[Fe(CN)_(6)]^(-)`
`[PtCl_(4)]^(2-)`
`[CoF_(6)]^(3-)`
`[Ni(NH_(3))_(6)]^(2+)`

Solution :`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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