Question

The number of sigma bonds in

\[\begin{array}{cc}
\phantom{}\ce{H3C - C = CH - C ≡ C - H}\\
|\phantom{.............}\\
\ce{H}\phantom{.............}
\end{array}\]

Options

• 7

• 8

• 9

• 10

Answer 1

10

Explanation:

\[\begin{array}{cc}
\ce{H}\phantom{.....................}\\
|σ\phantom{....................}\\
\phantom{.}\ce{H  \overset{σ}{-} C \overset{σ}{-} C \overset{σ}{-} C \overset{σ}{-} C \overset{σ}{≡} C \overset{σ}{-} H}\phantom{.}\\
\phantom{.}|σ\phantom{....}|σ\phantom{....}|σ\phantom{..........}\\
\phantom{}\ce{H}\phantom{....}\ce{H}\phantom{....}\ce{H}\phantom{...........}
\end{array}\]

Numbers of σ bonds = 10