Question

multiple choice 2 points. name the alkane shown: 5 - ethyl - 2,2 - methylhexane 5 - pentyl - 1,4 - dimethylpentane 5 - methyl - 2,2 - diethyloctane 5 - ethyl - 2,2 - dimethyloctane

Explanation:

Step1: Identify the longest carbon - chain

The longest continuous carbon - chain has 8 carbon atoms, so the parent alkane is octane.

Step2: Locate and name substituents

There are two methyl groups at the 2 - position and one ethyl group at the 5 - position. The naming convention for alkanes requires listing substituents in alphabetical order. So the name is 5 - ethyl - 2,2 - dimethyloctane.

Answer:

D. 5 - ethyl - 2,2 - dimethyloctane