
(from the article `isomerism`) Two classes of stereoisomeric compounds are generally recognized: optical isomers and geometric isomers. Optical isomers occur in pairs that are ... ...isomerism arises when a carbon atom is bonded to four different groups. These can be attached in two different ways, one of which is the mirror ... [2 r...
Found on
http://www.britannica.com/eb/a-z/o/24

Stereoisomerism involving the arrangement of substituents about an asymmetric atom or atoms (usually carbon) so that there is a difference in the behaviour of the various isomers with regard to the extent of their rotation of the plane of polarised light. ... Compare: stereoisomerism. ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973

stereoisomerism in which the isomers are identical in molecular weight and most chemical and physical properties but differ in their effect on the rotation of polarized light. Cf.
Found on
https://www.infoplease.com/dictionary/optical-isomerism
No exact match found.