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Discuss the nature of bonding in the following coordination entities on the basis of Valence Bond Theory : [CoF_(6)]^(3-) |
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Answer» Solution :`[CoF_(6)]^(3-)` -- `sp^(3)d^(2)`, octahedral, paramagnetic. FORMATION of `[CoF_(6)]^(3-)` Oxidation state of Co is +3. Electronic configuration of `Co^(3+)` No pairing of electrons `sp^(3)d^(2)` hybridisation  As `F^(-)` ION is a weak ligand, pairing of electrons does not TAKE place, 4s, 4p and two of the 4d orbitals hybridise (`sp^(3)d^(2)` hybridisation) giving rise to octahedral complex. As the d orbitals of the next shell are INVOLVED in hybridisation, it is an outer complex. As there are four unpaired electrons, the complex ion is paramagnetic. |
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