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Types of Isomerism

OCR A-level Organic ChemistryNaming and IsomerismLesson 2 of 5

Isomers are compounds with the same molecular formula but different arrangements of atoms. There are two main types of isomerism.

Structural isomers have the same molecular formula but different structural formulae. The atoms are bonded together in a different order. Pentane and 2-methylbutane are structural isomers of C5H12.

Diagram

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