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Explain why cannot we have isomers of fi...

Explain why cannot we have isomers of first three members of alkane family.

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First three members of alkane family are methane `(CH_(4))`, ethene `(CH_(3)-CH_(3))` and propane `(CH_(3)-CH_(2)-CH_(3))`. Since there is no scope for branching in alkanes having upto three carbon atoms, therefore no isomerism is possible.
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DINESH PUBLICATION-CARBON AND ITS COMPOUNDS-Short Answer Questions
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