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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

smaller size of B-atom as compared to that 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)`

Text Solution

Verified by Experts

The correct Answer is:
C
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