• # question_answer Number of isomers of ${{C}_{4}}{{H}_{10}}$ is [CBSE PMT 1996; AFMC 1997; RPMT 2002; MP PMT 1997] A) 2 B) 3 C) 4 D) Isomerism not exist

Solution :

$\underset{n-\text{Butane}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}}}\,$, $\underset{\text{Iso}-\text{butane}}{\mathop{C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,}{\mathop{CH}}\,}}\,-C{{H}_{3}}}}\,$

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