What is the difference between Constitutional Isomers and Stereoisomers?

Isomer is a term that is explicitly used in organic chemistry. The term refers to molecules with the same molecular formula but has different chemical structures. These molecules also demonstrate different chemical and physical properties from each other in general yet having the same molecular formula.

Constitutional isomers are also recognized as structural isomers because these molecules have the same molecular formula and only vary from each other in the way that the individual atoms are linked. There are three subdivisions under constitutional isomers, including skeletal, positional, and functional group isomers.

Stereoisomers are isomeric compounds with a similar molecular formula, and they have the same connectivity of atoms, but they only differ in the three- dimensional arrangements of atoms in space.