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How would you account for the magnetic b...

How would you account for the magnetic behaviour of `[Fe(CN)_(6)]^(3-) and [Fe(CN)_(6)]^(4-)` ?

Text Solution

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`[Fe(CN)_(6)]^(3-)` involves ` d^(2)sp^(3)` hybridisation

One 3d orbital is singly occupied , hence it is weakly paramagnetic in nature . `[Fe(CN)_(6)]^(4-)` involves also `d^(2)sp^(3)` hybridisation but it has `Fe^(2+)` ion as central ion.

It has no unpaired electron , hence it is diamagnetic in nature
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