Question

Third member of alkene in homologous series

Answer 1

It's Ch3ch2ch=ch2. It's name is but-2-ene.

Answer 2

The third member of alkene in homologous series $C_4H_8$.

• The series in which organic compounds possesses the same functional group and similar properties are called the homologous series.
• The members of the homologous series differ by $-CH_2$ unit to the next compound.
• The first member of the homologous series is $C_2H_4$.
• Thus, the second member of the homologous series is $C_3H_6$.
• The third member of the homologous series is $C_4H_8$.