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 $CH_2=CH-C \equiv CH$.Counting the bonds:Sigma $( \sigma )$ bonds: There are $3$ $C-H$ bonds,$1$ $C-C$ singl

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$7$ sigma and $3$ pi

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

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

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