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Which of the following molecules is achiral? a) (2R,3R)-2,3-Dichloropentane b) (2R,3S)-2,3-Dichloropentane c) (2S,4S)-2,4-Dichloropentane d) (2S,4R)-2,4-Dichloropentane
Which of the following molecules is achiral? a) (2R,3R)-2,3-Dichloropentane b) (2R,3S)-2,3-Dichloropentane c) (2S,4S)-2,4-Dichloropentane d) (2S,4R)-2,4-Dichloropentane
Final answer:Among the molecules listed,(2R,3S)-2,3-Dichloropentaneis achiral due to its internal plane of symmetry, even though it has chiral centers. It is considered a meso compound, which means it has chiral centers but is overall achiral.Explanation:The subject of your question pertains to chirality, a concept inChemistrythat deals with the nature of asymmetry inmolecules. In particular, you've asked "Which of the following molecules is achiral? a) (2R,3R)-2,3-Dichloropentane b) (2R,3S)-2,3-Dichloropentane c) (2S,4S)-2,4-Dichloropentane d) (2S,4R)-2,4-Dichloropentane". Chiral molecules are those that cannot be superimposed on their mirror images, and each chiral center (typically a carbon atom with four different groups attached) can have two possible configurations (R or S). In contrast, achiral molecules can be superimposed on their mirror images. In these examples, each of the molecules has two chiral centers, represented by the (2R,3R), (2R,3S), (2S,4S), and (2S,4R) prefixes. To determine which molecule is achiral, we look for the one that has mirroring across the molecule, which is the case for option b), (2R,3S)-2,3-Dichloropentane. This molecule is a meso compound, which means it has chiral centers but is overall achiral because it has an internal plane of symmetry.Learn more about Chirality here:brainly.com/question/13701353#SPJ11...