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 $C-F$ is
- ASignificant $p\pi-p\pi$ interaction between $B$ and $F$ in $BF_3$ whereas there is no possibility of such interaction between $C$ and $F$ in $CF_4$
- BLower degree of $p\pi-p\pi$ interaction between $B$ and $F$ in $BF_3$ than that between $C$ and $F$ in $CF_4$
- CSmaller size of $B$ atom as compared to that of $C$ atom
- DStronger bond between $B$ and $F$ in $BF_3$ as compared to that between $C$ and $F$ in $CF_4$
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