Isomers and Isomerism
Compounds which have same molecular but different structural formulae are called isomers and the phenomenon is known as isomerism.
1. Chain Isomerism – The isomerism in which the isomers differ from each other due to the presence of different carbon chain skeletons .Example: n-butane and iso-butane.
2. Position Isomerism – the type of isomerism in which the isomers differ in the position of the functional group. Example: But-1-ene and But-2-ene.
3. Functional Isomerism – The type of isomerism in which the isomers differ in structure due to the presence of different functional groups.