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Isomers can be divided into 2 main category, which are structural/constitutional isomer and stereoisomers.
Structural (constitutional) isomers are isomers with same molecular formula but with atoms bonded in different order .
3 structural isomers of pentane , C5H12.
The atoms of stereoisomers are joined in the same order but have a different spatial arrangement . Geometric isomers are one form of stereoisomers due to restricted bond rotation.
are chiral molecules that are non-superimposable mirror image.
This is an example of superimposable mirror image.
Our hands are non-superimposable mirror image.
In general, a molecule with non-superimposable mirror image have 4 different substituents at the chiral center. These 2 mirror image are called enantiomers.
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