The configuration for each pair of enantiomers of the given molecules is to be written. Concept introduction: The molecules that are non-superimposable or not identical with its mirror image are known as chiral molecules. A pair of two mirror images that are non-identical is known as enantiomers. The enantiomers in which the path traced from the highest atomic number to the lowest atomic number is in anticlockwise direction are designated as S provided that among the four groups attached to the chiral carbon, the least priority group is in horizontal position in Fischer projection. The enantiomers in which the path traced from the highest atomic number to the lowest atomic number is in the clockwise direction are designated as R provided that among the four groups attached to the chiral carbon, the least priority group is in horizontal position in Fischer projection. The objects or molecules that are superimposable with their mirror images are achiral objects or molecules, and these objects have a centre of symmetry or plane of symmetry. An imaginary plane through which a molecule is bisected in such a manner that the molecule is divided into two halves and these two halves are mirror images of each other is known as the plane of symmetry.

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Chapter 5, Problem 10PP

Interpretation Introduction

Interpretation:

The configuration for each pair of enantiomers of the given molecules is to be written.

Concept introduction:

The molecules that are non-superimposable or not identical with its mirror image are known as chiral molecules.

A pair of two mirror images that are non-identical is known as enantiomers.

The enantiomers in which the path traced from the highest atomic number to the lowest atomic number is in anticlockwise direction are designated as S provided that among the four groups attached to the chiral carbon, the least priority group is in horizontal position in Fischer projection.

The enantiomers in which the path traced from the highest atomic number to the lowest atomic number is in the clockwise direction are designated as R provided that among the four groups attached to the chiral carbon, the least priority group is in horizontal position in Fischer projection.

The objects or molecules that are superimposable with their mirror images are achiral objects or molecules, and these objects have a centre of symmetry or plane of symmetry.

An imaginary plane through which a molecule is bisected in such a manner that the molecule is divided into two halves and these two halves are mirror images of each other is known as the plane of symmetry.

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(A) Indicate the positions (axial or equatorial) of the two substituents (a, b) in the most stable chair conformation. (B) Indicate the positions (axial or equatorial) of the two substituents (a, b) of Enantiomer in the most stable chair conformation. b