Question

What is the difference between structural and geometrical isomerism?

Answer 1

STRUCTURAL ISOMERISM:	GEOMETRICAL ISOMERISM:
1. In this isomerism the molecular formula and the number of atoms remain the same only the arrangement of the molecules was different which gives rise to another structure thus, called structural isomerism.	1. These types of isomerism are classified as stereoisomerism. In which the molecular formula of a compound remains the same only the spatial arrangement of the molecules is different. This is called geometrical isomerism.
2. They are 4 types of structural isomerism i.e, chain, positional, functional, ring-chain isomerism.	2. They are cis-trans isomerism. i.e. if the same type of molecules is present on the same side of the double bond then it is called the cis type structure of that compound and if present on the opposite side then it is called the trans type structure of that compound.
3. For example-	3. For example- Butene (cis and trans forms).
4. Structural isomerism have different connectivity.	4. Geometrical isomerism have same connectivity but different spacial arrangements.