Duduli

Answer:- When the same molecular formula represents two or more structural formulae which differ in the position of substituents, functional group or multiple bond, then such structures are called position isomers and the phenomenon as position Isomerism.

Answer:- When the atoms or the groups attached to the two chiral atoms are different, this gives rise to a new pair of molecules, called diastereo isomers.

Answer:- In this type of isomerism, the isomers possess the same structural arrangement but differ in the relative spatial arrangement of atoms or groups around the carbon atom.

Answer:- In this type of Isomerism, the isomers differ in the nature of the alkyl groups attached to the same functional group.Ethers, ketones and secondary amines can represent metamers.

Answer:- It has been found that some organic compounds are also optically active even though they do not contain any chiral carbon atom, are called atrpoisomerism.