Question

What is homologous series ? Explain with example

Answer 1

homologous series is a series of organic compounds where the successive members follow a regular pattern. the successive members differ by a CH2 group.

e.g. -

alkane group-

CH4 - methane
C2H6 - ethane
C3H8 - propane
C4H10 - butane

we can see that the members differ by a CH2 group.

Answer 2

homologous series is the  successive series of carbon compounds which differ from the CH2 group having the same chemical properties and same functional group and which belongs to the same family
----------------------------------
example
----------------------------
butane ------ C4H10
pentane ----- C5H12
hexane ------ C6H14

these two will differ from CH2  group and they belong to alkane family and are successive carbon compounds

there homologous series of carbon compounds will differ from 14 amu because molar mass of CH2 is 14