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Multiple Choice
Which of the following statements best describes a chiral molecule?
A
A molecule that has a plane of symmetry.
B
A molecule that contains only single bonds.
C
A molecule that has an asymmetric carbon atom and is not superimposable on its mirror image.
D
A molecule that is superimposable on its mirror image.
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 similar to how your left and right hands are mirror images but not superimposable.
Identify the key feature of a chiral molecule: The presence of an asymmetric carbon atom, also known as a chiral center, is crucial. This carbon is bonded to four different groups.
Evaluate the options: A molecule with a plane of symmetry is typically achiral because it can be divided into two mirror-image halves. A molecule with only single bonds is not necessarily chiral unless it has an asymmetric carbon.
Consider the correct description: A chiral molecule must have an asymmetric carbon and lack a plane of symmetry, making it non-superimposable on its mirror image.
Conclude with the correct statement: The best description of a chiral molecule is one that has an asymmetric carbon atom and is not superimposable on its mirror image.