Question

tag all the carbon atoms with pi bonds in this molecule. if there are none, please check the box below. there are none.

Explanation:

Step1: Recall pi - bond concept

Pi bonds are present in double and triple bonds.

Step2: Analyze the molecule

The molecule has a triple - bond ($C\equiv C$). In a triple - bond, there are 2 pi bonds. The carbon atoms involved in the $C\equiv C$ bond are the ones with pi bonds.

Answer:

The two carbon atoms that form the triple - bond ($C\equiv C$) should be tagged.