Questions
The bond dissociation energy of B-F in BF3 is 646 kJ mol whereas that of C-F in CF4 is 515 kJ mol ". The correct reason for higher B-F bond dissociation energy as compared to that of C-F is
detailed solution
Correct option is A
There exists significant interaction between B and F due to back bonding of lone pair of electrons on F to an empty p orbital on B. There is no such interaction in CF4.
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