Question

The number of sigma and pi bonds in $1$-buten-$3$-yne are :

• A. $5$ sigma and $5$ pi
• B. $7$ sigma and $3$ pi
• C. $8$ sigma and $2$ pi
• D. $6$ sigma and $4$ pi

Answer 1

The correct option is B $7$ sigma and $3$ pi

$H_{2}C=CH-C\equiv CH$

1-buten-3-yne

$7\sigma$ and $3pi$