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Are enantiomers chiral and diastereomers achiral?

Answer 1

Isabella Acosta

Enantiomers are always chiral, but diastereomers may or may not be chiral.

Diastereomers are optical isomers that are not mirror images of each other.

Here are the Fischer projections of some diastereomeric pairs.

Both diastereomers chiral

(+)-Erythrose and (-)-erythrose are enantiomers, as are (+)-threose and (-)-threose.

Each erythrose isomer is a diastereomer of each threose isomer, and each is chiral.

One chiral and one achiral diastereomer

Tartaric acid exists as a meso compound and a pair of enantiomers.

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Answer 2

Jacob Anderson

Enantiomers are chiral, and diastereomers can be either chiral or achiral.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.