BRAINCAKEPosition Isomerism
Structural isomers have the same molecular formula but a different structural formula. Position isomerism is one type of structural isomerism: the carbon skeleton and the functional group are the same, but the functional group is in a different position on the chain.
For alkenes, the C=C can sit at different places along the chain. The locant in the name shows where it is, so position isomers have different numbers in their names.
C4H8 has two straight-chain position isomers:
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More in Alkenes
- General Formula
- Naming Alkenes
- Bonding
- Geometric Isomerism
- Nomenclature (Cahn-Ingold-Prelog)
- Physical Properties of Alkenes
- Combustion
- Electrophiles
All 23 lessons in Alkenes · All AQA AS-level Chemistry topics