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Optical Isomers

AQA A-level ChemistryOptical IsomerismLesson 2 of 6

Optical isomerism is a form of stereoisomerism. Stereoisomers have the same structural formula but a different arrangement of atoms in space.

A molecule with one chiral centre exists as two optical isomers, called enantiomers. Enantiomers are non-superimposable mirror images of each other.

Diagram

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Key terms in this lesson

plane-polarised light
Light in which the vibrations occur in only one plane, produced by passing ordinary light through a polarising filter.

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