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What is Enantiomer?
Optical isomers that are mirror images of each other but non-superimposable, are called enantiomers.
A more complete definition would be:
Optical isomers (i.e. molecules with same molecular formula, same structural formula but acting differently with plane polarized light) that are mirror images of each other but non-superimposable, are called enantiomers.
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