The triple bond in ethyne is made up of two $\pi$ bonds, each formed by lateral overlap of two p orbitals, and a $\sigma$bond formed by end-on overlap of two sp hybrid orbitals.

Question

The triple bond in ethyne is made up of two $\pi$ bonds, each formed by lateral overlap of two p orbitals, and a  $\sigma$bond formed by end-on overlap of two sp hybrid orbitals.

Quizplus · Accepted Answer

This is correct. In ethyne, the triple bond is made up of two pi bonds that result from the lateral overlap of two p orbitals, and one sigma bond that results from the end-on overlap of two sp hybrid orbitals.

The Triple Bond in Ethyne Is Made Up of Two π\piπ

The Triple Bond in Ethyne Is Made Up of Two $\pi$