Question

The successive members of a homologous series differ by a mass of ______amu.

• A. 14

Answer 1

The correct option is A 14
Compounds having the same functional group as well as chemical characteristics form a homologous series. The members of a homologous series are called homologues.

The successive members of a homologous series are differ by a ${\text{-CH}}_2$ group. The molecular mass of a ${\text{-CH}}_2$ group is 14 amu. Hence, each successive homologue of a homologous series differ by a mass of 14 amu.