Fig 6 6:
E is mirror image of D; E is rotated by 180o to get F and F is
non superimposable on its mirror image D However, the sign of optical rotation is not necessarily related to
the absolute (actual) configuration of the molecule Rationalised 2023-24
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Chemistry
(iii) Retention: Retention of configuration is the preservation of the spatial
arrangement of bonds to an asymmetric centre during a chemical
reaction or transformation