Optical Isomerism
Easychemistry
A compound is optically active if it:
Select the correct option:
Solution
Incorrect! Answer:
Lacks plane and center of symmetry (chiral)
Optical Activity is the ability of a substance to rotate the plane of plane-polarized light.
- Purity of Chirality: A molecule is optically active only if it is Asymmetric or Chiral, meaning it cannot be superimposed on its mirror image.
- A molecule is chiral if it lacks elements of symmetry such as a Plane of Symmetry (σ) or a Center of Symmetry (i). Most commonly, this occurs when a carbon atom is bonded to four different groups (Chiral center).
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About This Question
- Subject
- chemistry
- Chapter
- some basic principles of organic chemistry
- Topic
- optical isomerism
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Lacks plane and center of symmetry (chiral)
Optical Activity is the ability of a substance to rotate the plane of plane-polarized light.
- Purity of Chirality: A molecule is optically active only if it is Asymmetric or Chiral, meaning it cannot be superimposed on its mirror image.
- A molecule is chiral if it lacks elements of symmetry such as a Plane of Symmetry (σ) or a Center of Symmetry (i). Most commonly, this occurs when a carbon atom is bonded to four different groups (Chiral center).
This easy difficulty chemistry question is from the chapter some basic principles of organic chemistry, covering the topic of optical isomerism. It appeared in the 2025 exam.
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