Keisomeran
- Isomer ialah sebatian yang mempunyai formula molekul yang sama tetapi formula struktur yang berlainan.
Contoh 2 isomer butana
(The 2 molecules have same molecular formulae but different structural formulae) - Isomers have different physical properties because they have different molecular structures.
- However, isomers have the same chemical properties because they belong to the same homologous series.