List of the Most Important Symbols Used 1.Introduction 2.The Mass and Size of the Atom 3.Isotopes 4.The Nucleus of the Atom 5.The Photon 6.The Electron 7.Some Basic Properties of Matter Waves 8.Bohr's Model of the Hydrogen Atom 9.The Mathematical Framework of Quantum Theory 10.Quantum Mechanics of the Hydrogen Atom 11.Lifting of the Orbital Degeneracy in the Spectra of Alkali Atoms 12.Orbital and Spin Magnetism.Fine Structure 13.Atoms in a Magnetic Field:Experiments and Their Semiclassical Description 14.Atoms in a Magnetic Field:Quantum Mechanical Treatment 15.Atoms in an Electric Field 16.General Laws of Optical Transitions 17.Many-Electron Atoms 18.X-Ray Spectra,Internal Shells 19.Structure of the Periodic System.Grates of the Elements 20.Nuclear Spin,Hyperfine Structure 21.Modern Methods of Optical Spectroscopy 22.Progress in Quantum Physics:A Deeper Understanding and New Applications 24.Fundamentals of the Quantum Theory of Chemical Bonding Appendix Solutions to the Problems Bibliography of Supplementary and Specialised Literature Subject Index Fundamental Constants of Atomic Physics(Inside Front Cover) Energy Conversion Table(Inside Back Cover)