👉 Stereoisomer is a type of chemical structure in which two or more identical atoms are found on either side of a common center, such as an electron. The term "stereoisomeric" refers to the fact that the atoms located at the ends of a stereoisomer are identical and have opposite charges. For example, a stereoisomer may consist of two identical atoms with opposite charges located at the ends, like H2O (water) or NH3 (ammonium