Question

How can define homologus series

Answer 1

Homologous series is a series of compounds with the same general formula, usually varying by a single parameter—such as the length of a carbon chain. ... Compounds within a homologous series typically have a fixed set of functional groups that gives them similar chemical and physical properties.

Answer 2

I think ..homologous series is a series of compounds in which adjacent members differ by one CH2 group.