👉 Paraenesize is a term used in organic chemistry to describe the size of an enantiomer. Enantiomers are molecules with opposite chemical properties, and they can be distinguished by their structural formula or by their molecular weight. In paraene size, there are two types of enantiomers: dihedrals (2-membered) and tetrahedral. Dihedrals have a single ring that is both symmetrical and mirror-symmetric, while tetrahedral enantiomers have