Textbook Question
Classify the following objects and molecules as chiral or achiral.
(e)
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5. Chirality
Test 1:Plane of Symmetry
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Which of the following statements best describes a plane of symmetry in a molecule?
A
A plane that divides the molecule into two identical halves that are mirror images of each other.
B
A plane that divides the molecule into two non-superimposable mirror images.
C
A plane that is perpendicular to the axis of chirality in a chiral molecule.
D
A plane that allows the molecule to rotate freely without changing its structure.
Verified step by step guidance1
Understand the concept of a plane of symmetry: A plane of symmetry in a molecule is an imaginary plane that divides the molecule into two mirror-image halves.
Identify the characteristics of a plane of symmetry: The two halves created by the plane should be identical and mirror images of each other, meaning they are superimposable.
Differentiate between superimposable and non-superimposable mirror images: Superimposable mirror images can be placed on top of each other and match perfectly, while non-superimposable mirror images cannot.
Consider the role of symmetry in molecular chirality: A chiral molecule lacks a plane of symmetry, as it cannot be divided into two identical mirror-image halves.
Evaluate the given statements: The correct description of a plane of symmetry is the one that divides the molecule into two identical halves that are mirror images of each other.
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