Question

What is meant by homologous series of organic compounds? Write the chemical formulae of two members of a homologous series and state which part determines the :( i ) physical properties, ( ii ) chemical properties, of these compounds.

Answer 1

homologous series is the series of organic compound which follow a particular pattern, successive members follow a difference of CH2
two members are -
CH4
C2H6

Answer 2

Homologous series is series of compounds with similar general formula and similar chemical properties due to the presence of similar functional group but structurally differ by general formula ch2
Members- Ch2,C2h6
And showing a gradation in physical properties as a result of increase in molecular size and mass.