Why do first three alkanes methane, ethane and propane have no isomers?

Why do first three alkanes methane, ethane and propane have no isomers?
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1 Answer

Answer :

Methane (CH 4 ), ethane (C 2 H 6 ) and propane (C 3 H 8 ) have no scope for branching of C –

C chain hence they do not exhibit isomerism.
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