Isomers are two or more compounds having the same molecular formula but different structural formula or spatial representations.

The compound C\(_3\)H\(_6\)CI\(_2\) has four isomers. They include:

(a) 1,1 - dichloropropane

(b) 1,2 - dichloropropane

(c) 1,3 - dichloropropane

(d) 2, 2 - dichloropropane

See diagram above for better understanding.