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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` in `CF_(4)` is

A

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

B

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)`

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
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