Consider two Fischer projections (I) and (II). What is their stereochemical relationship?
(I) 
(II)
Text Solution
Verified by ExpertsThe correct answer is:
D
In a Fischer projection, rotating the whole diagram by
gives the same stereoisomer (no change in configuration). Structure (II) is just a
rotation of (I): the ends (
) swap positions and the OH groups appear left instead of right, yet it's the same molecule.
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