Identify the molecular formula of an alkane that exhibits only two different structural isomers.

Identify the molecular formula of an alkane that exhibits only two different structural isomers.
  1. $\mathrm{C}_2 \mathrm{H}_6$
  2. $\mathrm{C}_3 \mathrm{H}_8$
  3. $\mathrm{C}_4 \mathrm{H}_{10}$
  4. $\mathrm{C}_6 \mathrm{H}_{12}$

Solution

$\begin{array}{|c|c|c|} \hline \text{Number of Carbon atoms} & \text{Alkane} & \text{Number of isomers} \\ \hline 2 & \text{Ethane} & \text{No structural isomer} \\ \hline 3 & \text{Propane} & \text{No structural isomer} \\ \hline-4 & \text{Butane} & \text{Two} \\ \hline 6 & \text{Hexane} & \text{Five} \\ \hline \end{array}$

Asked in: MHT CET 2023 (10 May Shift 2)

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