Question

The second member of homologous series of alkenes is

• A. ethene
• B. propene
• C. butene
• D. ethyne

Answer 1

The correct option is B

propene

Explanation for the correct option

(B) A homologous series is a series of chemical compounds that share the same functional group and have similar chemical characteristics. The series' members can either be branched or unbranched or vary by moiety, $-{\mathrm{CH}}_2$. The second member of the homologous series of alkenes is propene $\left({\mathrm{C}}_3{\mathrm{H}}_6\right)$.

The explanation for the incorrect options

(A) Ethene is the first member of the homologous series of alkenes.

(C) Butene is the third member of the homologous series of alkenes.

(D) Ethyne is alkyne not alkene.

Therefore, option (B) is correct. The second member of the homologous series of alkenes is propene.