1. Tardigrade
  2. Question
  3. Chemistry
  4. Butane -2,3- diol has how many optically active stereoisomers?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Butane $-2,3-$ diol has how many optically active stereoisomers?

NTA AbhyasNTA Abhyas 2020

Solution:

Substances possess the property to rotate the plane of polarized light are called optical active.
$\text{CH}_{3} - \text{CH}_{\text{|} \\ \text{OH}}^{\star} - \text{CH}_{\text{|} \\ \text{OH}}^{\star} - \text{CH}_{3}$
In it two asymmetric carbon atoms and a plane of symmetry are present. So, optically active isomers $= 2^{ n - 1} = 2^{ 2 - 1} = 2$
( $n =$ Number of asymmetric carbon atoms)
Solution Solution Solution
$d$ and $l$ are the non-superimposable mirror image of each other and can rotate polarized light. Meso is optically inactive because it contain plane of symmetry.