Which of the following statements is not an essential feature of an optically active compound?
A) the molecules of an optically active compound will be dissymetric or asymmetric.
B) the molecules of an optically active molecule must have at least one stereogenic site.
C) an optically active compounds molecular configuration will not be identical with its mirror image.
D) an optically active compound will have at least one stereoisomer.

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane