10 Questions
What are the two systems of notation used to classify molecules according to their symmetries?
The Schoenflies system and the Hermann-Mauguin system, or International system
What does a number n denote in the International system for point groups?
The presence of an n-fold axis
What does a diagonal line / indicate in the International system for point groups?
That the mirror plane is perpendicular to the symmetry axis
What does a bar over a number indicate in the International system for point groups?
That the element is combined with an inversion
In the International system for point groups, what does the notation '4mm' represent?
It represents a point group symmetry with a 4-fold axis and mirror planes
In the International system for point groups, what does the notation 'C4v' represent?
Presence of a C4 axis and vertical mirror plane
What does a bar over a number indicate in the International system for point groups?
The element is combined with an inversion
What does a diagonal line / indicate in the International system for point groups?
The mirror plane is perpendicular to the symmetry axis
What does the notation '4mm' represent in the Hermann-Mauguin system?
Presence of a 4-fold rotation axis and multiple mirror planes
What does the notation 'C3v' represent in the Schoenflies system?
Presence of a C3 axis and vertical mirror plane
Test your knowledge of molecule symmetry classification with this quiz. Learn about the Schoenflies and Hermann-Mauguin notation systems and how they are used to categorize molecules based on their symmetry elements.
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