Question

Select the option that will complete the homologous series given below.

${\text{C}}_2{\text{H}}_4$, ${\text{C}}_3{\text{H}}_6$, _______, ${\text{C}}_5{\text{H}}_{10}$, ${\text{C}}_6{\text{H}}_{12}$

• A. ${\text{C}}_4{\text{H}}_8$
• B. ${\text{C}}_4{\text{H}}_{10}$
• C. ${\text{C}}_4{\text{H}}_6$
• D. ${\text{C}}_4{\text{H}}_4$

Answer 1

The correct option is A ${\text{C}}_4{\text{H}}_8$

• The homologous series is a series of compounds with same functional group that differs by a $-C{H}_2$ unit.
• Given here is the alkene series. So, the successive member after ${\text{C}}_3{\text{H}}_6$ in the given alkene homologous series is ${\text{C}}_4{\text{H}}_8$.