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The bond dissociation energy of -F in BF...

The bond dissociation energy of `-F` in `BF_(3)` is `646 kJ mol^(-1)` whereas that of `C-F` in `CF_(4)` is `515kJ mol^(-1)`. The correct reason for higher `B-F` bond dissociation energy as compared to that of `C-F` is

A

smaller size of B-atom compared to that of C-atom

B

stronger `sigma` bond between B and F in `BF_(3)` as compared to that between C and F in `CF_(4)`

C

significant `p pi - p pi` interaction between B and F in `BF_(3)` whereas there is no possibility of such interaction between C and F in `CF_(4)`

D

lower degree of `p pi -p pi` interaction between B and F in `BF_(3)` than that between C and F in `CF_(4)`.

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