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KCET2008ChemistryGeneral Organic Chemistry

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

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

B. 2

Step-by-step solution

where C^ * = asymmetric C atom It is a symmetrical molecule, so the number of optically active stereomers =2^ n -1 ( n = number of asymmetric C atom) =2²⁻¹=2¹=2

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