Fisher Projection and Numan Projection from stereochemistry

Stereochemistry

Type :- Static stereo  Dynamic stereo 

Stereochemistry :- study of isomer and 3D arrangement of atom and molecule 

Isomerism  

Isomers :- two and more than two compound having same molecule formula but different physical and chemical properties known as isomer 
Isomerism not the properties of at least two compound 
Two isomers are different IUPSC
Eg . CH3CH2OH  or CH3-O-CH3

Type of Isomers 

 Structural / Regeoisomer

Stereoisomer  

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Structural :--

Chain 
Position
Function group conformation 
Meta 
Ring chain 
Tautomerism 

Stereoisomer :--

Conformational :-

By  (c-c) bond rotational

Configurational :-  Geometrical :-    (by restricted rotation  C=C / C-C ) . 
Optical :- ( due to different behave to light )
Configurational:- 
It the 3D dimension arrangement of group around the stereochemistry within the molecule . 

Represention :- 

Wedge , Desh , Fisher Numan Sawhaurse 
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