Questions: The molecular structure shows a carbon atom in the center connected to three other carbon atoms, with each carbon atom having three hydrogen atoms attached, forming the chemical formula CH3-CH-CH3.

Solution Steps

Identify the longest continuous chain of carbon atoms in the molecule. In this case, the longest chain has four carbon atoms.

Number the carbon atoms in the longest chain starting from the end nearest to the first branch point. Here, the numbering starts from the left:

1. CH3- (Carbon 1)
2. CH- (Carbon 2)
3. CH2- (Carbon 3)
4. CH3 (Carbon 4)

Identify the substituents attached to the main chain. In this molecule, there is a methyl group (CH3) attached to the second carbon atom.

Final Answer