General Organic ChemistryHard
Question
How many optically active stereosiomers are possible for butane -2, 3- diol ?
Options
A.1
B.2
C.3
D.4
Solution

No. of asymmetric C-atoms (n = 2) and a plane of symmrtry is present .
So optically active isomers = 2n - 1 = 22-1 = 2

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