The alkanes, alkenes and cycloalkanes are examples of homologous series. A homologous series is a group of chemicals which have similar chemical properties and can be represented by a general formula.

Worth noting, this work presents the first homologous series based on defect ordering found for hybrid organic–inorganic perovskites. "This study provides a new playground for defect engineering ...

The alkanes are a homologous series with a structure based on a carbon chain - each carbon atom forms four covalent bonds The intermolecular forces vary between molecules, so different organic ...