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

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