|1.||stereoisomerism See also optical isomerism the existence of two or more compounds having the same molecular formula but a different arrangement of atoms within the molecule|
|2.||the existence of two or more nuclides having the same atomic numbers and mass numbers but different energy states|
isomerism i·som·er·ism (ī-sŏm'ə-rĭz'əm)
The phenomenon of the existence of isomers.
The complex of chemical and physical phenomena characteristic of or attributable to isomers.
The state or condition of being an isomer.
structural isomerism n.
Isomerism involving the same atoms in different arrangements.