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Earlier discussion
3 older comments kept for context.
favour
there are alkanes ..so they belong to the same homologous,C2H6 is ethane while C4H10 is butane.. with formula CnH2n+2
Oluwaseun Adeyemi
In organic chemistry, a homologous series is a series of compounds with the same functional group and similar chemical properties in which each successive member differs by CH2.
Tolulope Soneye
correct answer is D