Isomers

In chemistry, isomers are molecules that have the same chemical formula but have a different arrangement of atoms. Isomers do not necessarily have the same properties. If the arrangement of atoms causes different functional groups to appear in the molecule, the properties will differ.

There are a few different types of isomers. Structural isomers have atoms that are arranged differently between the molecules. This could lead to different functional groups and different properties of the molecules. In stereoisomers, the atoms are arranged in the same way but the geometry of the molecule is different. Stereoisomers will have nearly identical properties and react in in a similar way.