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

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 bond is

A

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`.

B

lower degree of ` p pi - p pi` interaction between B and F in `BF_3` than that between C and F in `CF_4`.

C

smaller size of B - atoms as compared to that of C-atom.

D

stronger `sigma` bond between B and F in `BF_3` as compared to that between C and F in `CF_4`.

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The correct Answer is:
A
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