Question
GeneralGeneralGeneral

How many structural isomers are possible for C5H12?

Verified Answer

C₅H₁₂ (pentane) has 3 structural isomers. Structural isomers have the same molecular formula but different arrangements of carbon atoms.

The three isomers are:

  • n-Pentane – straight-chain structure

  • Isopentane (2-methylbutane) – one branched chain

  • Neopentane (2,2-dimethylpropane) – highly branched structure

These compounds have the same formula, C₅H₁₂, but differ in their carbon skeletons, leading to different physical properties.

Quick Fact: Pentane is the first alkane that shows structural isomerism.