• # question_answer The number of a and n bonds present in l-buten-3-yne are A)  $7\sigma$and$5\pi$           B) $6\sigma$ and$4\pi$C)  $6\sigma$and$6\pi$           D)  $7\sigma$and $3\pi$

l-buten-3-yne can be written as. It has $3\pi$ and $7\sigma$ bonds. Hence, the correct option is [d].