A) \[9\sigma ,\,\,3\pi \]
B) \[9\sigma ,\,\,9\pi \]
C) \[3\sigma ,\,\,4\pi \]
D) \[5\sigma ,\,\,7\pi \]
Correct Answer: A
Solution :
\[\underset{9\sigma ,\,3\pi \,bonds}{\mathop{H\overset{\sigma }{\mathop{-}}\,\underset{\begin{smallmatrix} |\sigma \\ H \end{smallmatrix}}{\mathop{C}}\,\underset{\sigma }{\overset{\pi }{\mathop{=}}}\,\underset{\begin{smallmatrix} |\sigma \\ H \end{smallmatrix}}{\mathop{C}}\,\underset{\sigma }{\mathop{-}}\,\underset{\begin{smallmatrix} |\sigma \\ H \end{smallmatrix}}{\overset{\begin{smallmatrix} H \\ H \\ |\sigma \end{smallmatrix}}{\mathop{C}}}\,\underset{\sigma }{\mathop{-}}\,C\underset{\sigma }{\overset{2\pi }{\mathop{\equiv }}}\,N}}\,\]
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