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Using the valence bond approach, deduce ...

Using the valence bond approach, deduce the shape and magnetic behaviour of `[Cr(NH_(3))_(6)]^(3+)` ion.

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Cr has electronic configuration [Ar] `4s^(1) 3d^(5)`
`Cr^(3+)` has electronic configuration [Ar] `4s^(0) 3d^(3)`

`d^(2)sp^(3)` hybridisation gives octahedral shape. The complex is paramagnetic due to presence of unpaired electrons.
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