This course covers an experimental foundation of quantum theory; particles and waves; uncertainty principles; wave and wave equation; properties of a well-behaved wave functions; Schrödinger equation and its solutions; the physical significance of the wave function; solutions of the Schrödinger equation for hydrogen - like atoms: quantum numbers, radial functions, angular, charge clouds and orbital; energy levels, electron configuration and the periodic table; ionic, covalent, hydrogen and metallic bonds, valence bond theory and molecular orbital theory for simple molecules and ions; complex ions; definition and examples of Lewis acids, Lewis bases, co-ordinate bond, ligands and co-ordination compounds; ionic structures and calculation of lattice energies.