What is an optical isomer?

Optical isomers are a form of stereoisomers which are chemical species with the same structural formula, but have a different arrangement of atoms in 3-dimensional space. Optical isomers are characterised by being non-superimposable mirror images of one another and are commonly seen in organic structures with chiral carbons. They were named optical isomers since scientists first distinguished between them by the way they rotate the plane of polarised light in different directions.

TD

Related Chemistry A Level answers

All answers ▸

What is fractional distillation used for in industry? Explain the molecular basis behind it.


When an unsymmetrical alkene undergoes electrophilic addition you often get a major and minor product. What would the major product be when propene reacts with hydrochloric acid? Why is this?


Draw the shape of an SF6 and SF4 molecule, indicating bond angles and any lone pairs which may influence these. What shape is the SF6 molecule?


This question is about the ionisation energy of elements across a period. a) Define ionisation energy. b) Explain the trend in ionisation energy across a period.