Isomerism is a property of organic compound that expresses different chemical properties of two compound having same molecular formula.
Two different molecules are called isomer of one another.
There have Three different causes of isomerism in organic compound.
Isomerism due to different structure but same molecular formula. This types of isomerism is called structural isomerism. This types of isomerism are classified into
Isomerism due to different orientation in there dimensional space but same molecular and structural formula. This types of isomerism is called stereo isomerism or geometric isomerism.
This types of isomer are in two class
Cis isomer
Trans isomer
Isomerism due to differently rotation of plane polarized light when it pass through the molecular solution.
The solution that rotate plane polarized light to right direction is dextro rotatory and that rotates to left direction is laveo rotatory. This Optically active moleculeare isomer of each other. Such types of isomerism is called optical isomerism.
Two optically active molecule if mirror image of each other are enantiomers of each other.
Same molar amount of two enantiomers forms racemic mixture.
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