How many isomers (constitutional and stereoisomers) exist for dimethylcyclopentane?

Question

Quizplus · Accepted Answer

Dimethylcyclopentane can have 7 isomers in total. This includes 3 constitutional isomers, which are 1,1-dimethylcyclopentane, 1,2-dimethylcyclopentane, and 1,3-dimethylcyclopentane. Among these, 1,2-dimethylcyclopentane and 1,3-dimethylcyclopentane each have two stereoisomers (cis and trans), adding 4 more isomers. The 1,1-dimethylcyclopentane does not have stereoisomers due to its symmetry.

How Many Isomers (Constitutional and Stereoisomers) Exist for Dimethylcyclopentane