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Multiple Choice
Which of the following is a characteristic of a chiral molecule?
A
It has identical substituents on a carbon atom.
B
It is superimposable on its mirror image.
C
It has an asymmetric carbon atom.
D
It has a plane of symmetry.
Verified step by step guidance
1
Understand the concept of chirality: A chiral molecule is one that cannot be superimposed on its mirror image. This is often due to the presence of an asymmetric carbon atom, also known as a chiral center.
Identify the characteristics of a chiral molecule: A chiral molecule typically has an asymmetric carbon atom, which means the carbon is bonded to four different substituents.
Evaluate the options given: Analyze each statement to determine if it aligns with the definition of chirality. For example, a molecule with identical substituents on a carbon atom is not chiral because it lacks an asymmetric carbon.
Consider the concept of superimposability: A chiral molecule is not superimposable on its mirror image, which is a key characteristic that distinguishes it from achiral molecules.
Assess the presence of symmetry: A chiral molecule does not have a plane of symmetry, as this would allow it to be superimposable on its mirror image, contradicting the definition of chirality.