What is a homologous series? Explain with an example.

Explanation

The compounds of a homologous series can be represented by the same general formula. Compounds of a homologous series differ by `CH_2` from their consecutive members. All the compounds of a homologous series show similar chemical and physical properties. Example: Alkanes: such is Methane, Ethane, Propane, Butane, etc. belong to the same homologous series. Similarly all alkenes belong to a particular homologous series and all alkynes belong to another homologous series.
(a) Compounds of a homologous series have the same general formula.
(b) Compounds of a homologous series ditfer from their consecutive members by one carbon atom and two hydrogen atoms, i.e by `CH_2`
(c) compounds of a homologous series have same chemical properties.
(d) Compounds of a homologous series differ by molecular mass of 14u from their consecutive members.
(e) compounds of a homologus series differ by physical properties with increase or decrease in molecular mass.