Key term for Edexcel GCSE Chemistry, used in Hydrocarbons.
Molecules that have the same molecular formula but differ in the location of a functional group, such as the position of the C=C double bond.
Positional isomers appears in Edexcel GCSE Chemistry revision content for Qualitative Analysis, Hydrocarbons and Polymers, especially Hydrocarbons and Addition Reactions.
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