"Coverage of Physical Chemistry. Each volume includes a large number of illustrative numericals and typical problems to highlight the principles involved. IUPAC recommendations and SI units have been adopted throughout. The present book describes Wave Mechanics, Energy Quantization and Atomic Structure, Theories of Covalent Bond, Electrical and Magnetic Properties of Molecules, Molecular Spectroscopy, Molecular Symmetry and its Applications. Content:- 1. Wave Mechanics, Energy QuantIzatIon and atomIc structure 2. Theories of Covalent Bond 3. Electrical and Magnetic Properties of Molecules 4. Molecular Spectroscopy 5. Molecular Symmetry and Its Aplications