Successive members of a homologous series differ by
Aa carbon atom.
Ba CH$_3$ group.
Ca hydrogen atom.
Da CH$_2$ group.CORRECT
JUPEBChemistryOrganic Chemistry: Hydrocarbons
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Why the answer is D, and why the others tempt you.
Each member has one more carbon and two more hydrogens than the one before, a difference of CH$_2$ and a relative molecular mass difference of 14. Members share the same general formula and functional group.
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