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The number of unpaired electron in the c...

The number of unpaired electron in the complex ion `[CoF_(6)]^(3-)` is

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The correct Answer is:
4
`F^(-)` is a weak field ligand and no electronic regrouping takes place. (Also `Delta_(0)gtP` ) So, the electronic distribution is `t_(2g)^(4)e_(g)^(2)`
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