In chemistry, molecular symmetry describes the symmetry present in molecules and the classification of these … See more

The point group symmetry of a molecule is defined by the presence or absence of 5 types of symmetry element.
• Symmetry axis: an axis around which a rotation by results in a molecule indistinguis… See more

The symmetry operations of a molecule (or other object) form a group. In mathematics, a group is a set with a binary operation that satisfies the four properties listed below.
In a symmetry group, the group elements are the sy… See more

For any group, its character table gives a tabulation (for the classes of the group) of the characters (the sum of the diagonal elements) of the matrices of all the irreducible representations of the group. As the numbe… See more

Hans Bethe used characters of point group operations in his study of ligand field theory in 1929, and Eugene Wigner used group theory to explain the selection rules of atomic spectroscopy. The first character tables wer… See more