When two or more chemical compounds carry the same chemical formula but with different chemical atomic structures is called isomerism. Isomers are chemical compounds that possess the same chemical formula but with different properties and atom arrangements in the molecule. There are various types of isomerism
1. Structural Isomerism: These isomerisms have different atomic structures but the same molecular formula.
2. Stereoisomerism: These isomerisms have the same molecular formula and atomic bonds but different 3-dimensional atomic spacing.