AIIMS2017Chemistry-Stereochemistry

AIIMS 2017 Chemistry Optical Isomerism MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Total number of optically active forms in molecules with 'n' number of asymmetric carbon atoms and which are not divisible into two equal halves is 2ⁿ. It is the general formula for determining the stereoisomerism of any organic compound.

A

2n2^n

B

2n12^{n-1}

C

2fracn122^{\\frac{n-1}{2}}

D

2(n21)2^{\left(\frac{n}{2}-1\right)}

Correct Answer

Option C

Detailed Explanation

The total number of optically active forms in molecules with 'n' asymmetric carbon atoms is given by the formula 2ⁿ, which accounts for the possible configurations of each chiral center. This formula applies specifically to compounds that lack a plane of symmetry, ensuring that they cannot be divided into two equal halves, thus allowing for distinct enantiomers. Other options are not applicable as they do not provide relevant information or alternative answers to the question regarding stereoisomerism in organic compounds. Understanding this concept is crucial for predicting the stereochemical behavior of molecules in organic chemistry.

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