Isomerism

• Isomers are different compounds with the same molecular formula.
• Structural isomers are compounds with the same molecular formula but different structural formulae.
• Chain isomers are structural isomers with a different arrangement of the carbon skeleton.
• Function group isomers are structural isomers with different functional groups.
• Position isomers are structural isomers where the functional group is attached at a different position on the carbon chain.