What are homologous series of carbon compounds?

CBSE Class 10 CBSE Class 10 Science
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1

What are homologous series of carbon compounds ? Mention any two characteristics of homologous series.

2

Homologous Series : Homologous series is a group of organic compounds having similar structures and similar chemical properties in which the successive compounds differ by ${ CH }_{ 2 }$ group.
Characteristics of Homologous Series :

  1. All the members of a homologous series can be represented by the same general formula.
  2. Any two adjacent homologous differ by 1 carbon atom and 2 hydrogen atoms in their molecular formula.
  3. The difference in the molecular masses of any two adjacent homologous is 14 units.
  4. All the compounds of a homologous series show similar chemical properties.
  5. The members of a homologous series show a gradual change in their physical properties with increase in molecular mass.