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
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
- [AIEEE 2008]
- 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 $B-$ atom as compared to that of $C-$ atom.
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Correct match is :
Correct match is :
Which of the following statements about the interstitial compounds is incorrect?
Which of the following statements about the interstitial compounds is incorrect?
- [NEET 2013]