Question

Which types of isomerism are shown by 2,3-dichlorobutane?

• A. Optical isomerism
• B. Geometric isomerism
• C. Diastereo isomerism
• D. Structural isomerism

Answer 1

The correct option is A

Optical isomerism

The explanation for the correct option

(A) Optical Isomerism

• Optical isomers are two compounds with the same number and kinds of atoms, bonds, and distinct spatial arrangements of the atoms, but non-superimposable mirror images.
• The second and third carbons of 2,3-dichlorobutane are chiral. As a result, it exhibits optical isomerism.
• It forms $4$ optical isomers which are non -superimposable mirror images of each other
• 

The explanation for the incorrect option

(B)

• Because of the various geometrical configurations of the ligands, this sort of isomerism can be encountered in heteroleptic complexes.
• When two identical groups are positioned adjacently, the isomer is termed cis, and when they are organized oppositely, the isomer is called trans.

(C)

• An isomer is not a mirror image of another stereoisomer of the same substance and is a stereoisomer of a compound with two or more chiral centers.

(D)

• Structural isomerism occurs when molecules have the same molecular formula but a distinct structural formula.

Hence, option (A) is the correct answer. 2,3-dichlorobutane is Optical isomerism.