1.

How many optically active stereomers are possible for butane-2,3-diol

Answer»

3
4
1
2

Solution :`{:(""CH_(3)),("|"),(H-C_(**)-OH),("|"),(H-C^(**)-OH),("|"),(""CH_(3)),("butane-2,3-diol"):}` No. of asymmetric of CHIRAL carbon =2 , THEREFORE no. of optical isomers `= 2^(n) = 2^(2) = 4`, No. of optically active stereomers = 4-1=3, because MESO COMPOUND isoptically INACTIVE due to internal compensation.


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