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

tag all the carbon atoms with pi bonds in this molecule. if there are none, please check the box below.\nthere are none.
Answer
Explanation:
Step1: Recall bond - type knowledge
Pi bonds are present in double and triple bonds. Single bonds are sigma bonds only.
Step2: Analyze the given molecule
The molecule has a triple - bond ($C\equiv C$). In a triple - bond, there are 2 pi bonds and 1 sigma bond. The carbon atoms involved in the triple - bond ($C\equiv C$) have pi bonds.
Answer:
The two carbon atoms involved in the triple - bond ($C\equiv C$) should be tagged.