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The bond dissociation energy of BF in BF3 in 646KJmol1 whereas that of C-F in CF4 is 515KJmol1. The correct reason for higher B-F bond dissociation energy as compared to that of C-F is

(a)Stronger σ bond between B and F in BF3 as compared to that between C and F in CF4(b)Significant pπpπ interaction between B and F in BF3 whereas there is no possibility of such interaction between C and F in CF4(c)Smaller size of B-atom as compared to that of C-atom(d)Lower degree of pπpπ interaction between B and F in BF3 than that between C and F in CF4

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