Question

Write the molecular formula of first two members of homologous series having functional group -Cl.

Answer 1

The general formula for the homologous series of functional group −Cl is C_nH_2n+1Cl.

The two consecutive members of this series are:

a. CH₃Cl (Chloromethane)

b. CH₃CH₂Cl (Chloroethane)

where n is 1 and 2 respectively
​
The molecular formula for both of them are CH₃Cl and C₂H₅Cl.