Question

Which of the following compounds can exist as an meso compounds?

• A. $1,2$-dichlorobutane
• B. $2,3$-dichloropentane
• C. $2,3$-dichlorobutane
• D. $1,2$-dichloropentane

Answer 1

The correct option is C $2,3$-dichlorobutane

2,3-dichlorobutane can exist as meso compound because it possesses two chiral centres but it is optically inactive due to internal compensation caused by molecular plane of symmetry.