Symmetry elements, symmetry operations and groups -- Molecular point groups and crystallographic space groups -- Matrices and representations -- Character tables for point groups -- Hybrid orbitals in nonlinear molecules -- Representations of vibrational modes in nonlinear molecules -- Group theory and linear molecules -- Group theory and spectroscopy -- Crystal field splitting in transition metal complexes -- Delocalization energies of pie electron systems.

The book provides an introduction to symmetry and group theory and its applications to chemistry. Illustrations of symmetry operatives in various molecules have been provided. A simple yet detailed account of matrices, linear molecules and crystal symbols has been given. Computer programmes for finding symmetries of vibrations in non-linear molecules have also been provided.