Diastereomers Are

Question

Diastereomers are
A) mirror-image, nonsuperimposable stereoisomers.
B) non-mirror-image, nonsuperimposable stereoisomers.
C) stereoisomers with one or more double bonds.
D) none of the above.

Accepted Answer

Diastereomers are stereoisomers that are not mirror images of each other and cannot be superimposed on each other. In contrast, enantiomers are mirror-image stereoisomers that cannot be superimposed. Therefore, option A is incorrect. Option C is incorrect as diastereomers can have double bonds, but it is not a defining characteristic. Option D is incorrect as diastereomers are a specific type of stereoisomer.