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 bond - type knowledge

Pi bonds are present in double and triple bonds.

Step2: Identify double - bonded carbons

In the given molecule $H_3C - CH=CH_2$, the two carbon atoms involved in the $C = C$ double bond have pi bonds.

Answer:

The two carbon atoms in the $C = C$ double bond should be tagged.