A) stronger a bond between B and F in \[B{{F}_{3}}\]as compared between C and F in\[C{{F}_{4}}\].
B) significant \[p\pi -p\pi \] interaction between B and F in \[B{{F}_{3}}\]whereas there is no possibility of such interaction between C and F in\[C{{F}_{4}}\].
C) lower degree of \[p\pi -p\pi \] interaction between B and F in \[B{{F}_{3}}\]than between C and F in\[C{{F}_{4}}\].
D) smaller size of B- atom as compared to C- atom.
Correct Answer: B
Solution :
The delocalised bonding between filled p-orbital of F and vacant p-orbital of B leads to shortening of B-F bond length which results in higher bond dissociation energy of the B-F bond.You need to login to perform this action.
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