A) \[N-N\]
B) \[F-F\]
C) \[C-C\]
D) \[O-O\]
Correct Answer: C
Solution :
Greater the number of lone pairs present on the bonded atoms, greater is the repulsive interactions between them and smaller the bond energies.| Bond | \[C-C\] | \[\overset{\centerdot \centerdot }{\mathop{N}}\,-\overset{\centerdot \centerdot }{\mathop{N}}\,\] | \[_{\centerdot }^{\centerdot }\overset{\centerdot \centerdot }{\mathop{O}}\,-\overset{\centerdot \centerdot }{\mathop{O}}\,_{\centerdot }^{\centerdot }\] | \[_{\centerdot }^{\centerdot }\overset{\centerdot \centerdot }{\mathop{F}}\,-\overset{\centerdot \centerdot }{\mathop{F}}\,_{\centerdot }^{\centerdot }\] |
| Number of lone pairs | 0 | 1 | 2 | 3 |
| Bond energy (kJ/mol) | 348 | 163 | 146 | 139 |
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