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Assertion (A) [Fe(CN)(6)]^(3-) ion shows...

Assertion (A) `[Fe(CN)_(6)]^(3-)` ion shows magnetic moment corresponding to two unpaired electrons.
Reason (R) Because it has `d^(2)sp^(3)` type hybridisation.

Text Solution

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The correct Answer is:
d
Correct assertion. `[Fe(CN)_(6)]^(3-)` has `Fe^(3+) (3d^(5)=3d^(1)3d^(1)3d^(1)3d^(1)3d^(1))`. In presence of `CN^(-)`, electron pair upto give `3d^(2)3d^(2)3d^(1)3d^(0)3d^(0)`. Hybridization is `d^(2)sp^(3)`. Thus, it will have magnetic moment corresponding to one electron.
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