The Bond dissociation energy of B − F in BF 3 is 646 kJ mol − 1 whereas that of C − F in CF 4 is 515 kJ mol − 1 . The correct reason for higher B − F bond dissociation energy as compared to that of C

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The Bond dissociation energy of B − F in BF 3 is 646 kJ mol − 1 whereas that of C − F in CF 4 is 515 kJ mol − 1 . The correct reason for higher B − F bond dissociation energy as compared to that of C − F is

TestHub · Accepted Answer

In BF 3 , , B is sp 2 hybridised and has a vacant 2p -orbital which overlaps laterally with a filled 2p -orbital of F forming strong pπ-pπ bond. However in CF 4 , C does not have any vacant p -orbitals to undergo p -bonding. Thus BE B − F > BE C − F .

Chemistry - CHEMICAL BONDING Question with Solution | TestHub

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