Question

tag each carbon atom in the main chain of the molecule drawn below.

Explanation:

Step1: Identify main - chain carbons

The main - chain is the longest continuous chain of carbon atoms. In this molecule, we start counting from one end of the longest chain.

Step2: Tag each carbon

We can number the carbon atoms in the main - chain starting from 1. For simplicity, assume the left - most carbon in the longest continuous chain as carbon 1 and continue numbering along the chain.

Answer:

The carbon atoms in the main - chain need to be numbered sequentially starting from 1 for identification purposes. Without a specific way to show the tagging in this text format (like a drawing tool), the process is to identify the longest chain and then number the carbons in that chain one by one.