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The reaction [Fe(CN)(6)]^(3-) rarr [FeF(...

The reaction `[Fe(CN)_(6)]^(3-) rarr [FeF_(6)]^(3-)` takes place with

A

Decrease in magnetic moment

B

Increase in magnetic moment

C

Decrease in coordination number

D

Increase in coordination number.

Text Solution

Verified by Experts

The correct Answer is:
B
`Fe^(3+)`
`d^(4)`

`CNS^(-)` is a strong ligand . Electron pair up. Magnetic moment of `|Fe(CNS)_(6)|^(3-) = 0` `F^(-)` is a weak ligand . Electron do not pair up. Magnetic moment =` sqrt(n(n+2))=sqrt(4xx6)`
`4.93B`.
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