The number of optically active isomer observed in 2,3 -dichlorobutane is

Options

A. 0
B. 2
C. 3
D. 4

Answer

B

Explanation

Compound having signle chiral carbon always optically active and gives two active compound
`C-overset(**)underset(Cl)underset(|)(C)-overset(**)underset(Cl)underset(|)(C)-C` Active isomer `=2^(n-1) =2^(2-1)=2`
Where n =number of chiral carbon