The number of sigma and pi-bonds in but-1-ene | vedclass

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(B) The structure of but$-1-$ene$-3-$yne is $HC \equiv C-CH=CH_2$.To find the number of sigma $(\sigma)$ and pi $(\pi)$ bonds:$1$. The molecule has $3

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$7$ sigma and $3$ pi

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(B) The structure of but$-1-$ene$-3-$yne is $HC \equiv C-CH=CH_2$.To find the number of sigma $(\sigma)$ and pi $(\pi)$ bonds:$1$. The molecule has $3$ carbon-carbon bonds: one triple bond $(C \equiv C)$ and one double bond $(C=C)$ and one single bond $(C-C)$.$2$. The triple bond $(C \equiv C)$ consists of $1$ $\sigma$ and $2$ $\pi$ bonds.$3$. The double bond $(C=C)$ consists of $1$ $\sigma$ and $1$ $\pi$ bond.$4$. The single bond $(C-C)$ consists of $1$ $\sigma$ bond.$5$. There are $4$ $C-H$ single bonds,each being a $\sigma$ bond.Total $\sigma$ bonds = $1$ (from $C \equiv C$) + $1$ (from $C=C$) + $1$ (from $C-C$) + $4$ (from $C-H$) = $7$ $\sigma$ bonds.Total $\pi$ bonds = $2$ (from $C \equiv C$) + $1$ (from $C=C$) = $3$ $\pi$ bonds.Therefore,the molecule has $7$ $\sigma$ and $3$ $\pi$ bonds.

The number of sigma and pi-bonds in but$-1-$ene$-3-$yne are

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