Number of sigma and pi bonds present in but-1 | vedclass

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Question

(A) The structure of $but-1-ene-3-yne$ is $CH_2=CH-C\equiv CH$. Counting the bonds: There are $4$ $C-H$ sigma bonds. There are $3$ $C-C$ sigma bonds.

Vedclass · Accepted Answer

$7\sigma, 3\pi$

Vedclass · Answer

(A) The structure of $but-1-ene-3-yne$ is $CH_2=CH-C\equiv CH$. Counting the bonds: There are $4$ $C-H$ sigma bonds. There are $3$ $C-C$ sigma bonds. Total sigma bonds = $4 + 3 = 7$. There is $1$ $\pi$ bond in the double bond and $2$ $\pi$ bonds in the triple bond. Total $\pi$ bonds = $1 + 2 = 3$. Therefore,the molecule contains $7\sigma$ and $3\pi$ bonds.

Number of $\sigma$ and $\pi$ bonds present in $but-1-ene-3-yne$ respectively are

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