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Question
Propane and ethane are ______.
Options
Homologues
isomers
Solution
Propane and ethane are homologues.
Explanation:
Propane (\[\ce{C3H8}\]) and Ethane (\[\ce{C2H6}\]) belong to the same homologous series of alkanes because they differ by a \[\ce{CH2}\] (methylene) group and follow the general formula \[\ce{C_nH_{2n+2}}\] for alkanes. They are not isomers as they have different molecular formulas.
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