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9.15     Discuss the nature of bonding in the following coordination entities on the basis of valence bond theory:

                 (iv)[CoF_{6}]^{3-}

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(iv) The oxidation state of Co in the given comound is +3.  The electronic configuration of the compound is d6.       

Also, F- is a weak field ligand so no pairing of electrons will occur. 

  

                              

Hence the geometry of compound is octahedral and it is paramagnetic in nature.

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Devendra Khairwa

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