The bond dissociation energy of B - F in BF3 is 646 kJ mol-1 whereas that of C - F in CF4 is 515 kj mol-1. The correct reason for higher B - F bond dissociation energy as compared to that of C - F is

Question

The bond dissociation energy of B - F in BF₃ is 646 kJ mol^-1 whereas that of C - F in CF₄ is 515 kj mol^-1. The correct reason for higher B - F bond dissociation energy as compared to that of C - F is

stronger $\sigma$ bond between B and F in BF₃ as compared to that between C and F in CF₄

significant $p\pi - p\pi$ interaction between B and F in BF₃ whereas there is no possibility of such interaction between C and F in CF₄

lower degree of $p\pi - p\pi$ interaction between B and F in BF₃ than that between C and F in CF₄

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

Solution

Please login to view the detailed solution steps...

Go to DASH