1 Introduction. - SI Units. - Derived SI Units. - Prefixes for Fractions and Multiples of SI Units. - Units Contrary to SI. - Energy Units in Valency. - Classical Forms of Energy. - Problems. - 2 Gross Atomic Structure. - The Early Clues. - The Rutherford Experiment. - Discovery of the Neutron and Periodic Classification of the Elements. - Problems. - 3 Atomic Theory. - Two Spanners in the Works. - Dual Nature of Light and Matter. - The Spectrum of Atomic Hydrogen. - The Bohr Theory of Atomic Structure. - Stationary States Confirmed. - The Demise of the Bohr Theory. - The Standing Waves of a Vibrating Guitar String. - The Standing Waves of a Vibrating Drum Head. - A Wavelike Equation Applied to Matter. - Solutions to Schroedinger's Wave Equation. - The Heisenberg Uncertainty Principle. - Quantum-mechanical Hydrogen Atom. - The Ground State of the Hydrogen Atom. - Other One-electron Atoms. - Summary. - Problems. - 4 Many-electron Atoms. - Experiments Leading to Determination of Energies of Electrons in Atoms. - Electron Spin and the Pauli Principle. - Energy Levels of Many-electron Atoms. - The Periodic Table. - Trends in Ionization Potential. - Electron Configurations of Doubly Charged First-transition-series Ions. - Atomic Size. - Electron Affinities. - Summary. - Problems. - 5 Molecular Theory and Chemical Bonds. - Energy Changes and the Chemical Bond. - Valency and Quantum Mechanics. - Combinations of Atomic Ions. - Ion Clusters. - Review of Ionic Bonding. - The Covalent Bond. - The Virial Theorem and Molecular Stability. - The Forces in H2/+. - The Molecular Orbitals 1s? and 1s?*. - The Molecules H2/+ H2 He2/+ and He2. - The Molecular Orbitals 2s? 2s?* 2pz? 2pz?* 2px? 2px?* 2py? and 2py?*. - Heteronuclear Diatomic Molecules. - Experimentally Measurable Molecular Parameters. - Electron Sharing andthe Completed Valence-shell Principle. - Resonance. - Geometric Distribution of Bonds in Space. - Valence-bond Theory and Valence States. - Hybridization. - Delocalized Molecular Orbitals. - ?- and ?-Molecular Orbitals in Polyatomic Molecules. - Crystal-field Theory. - Crystal Fields Spectra and Magnetic Properties. - Van der Waals Forces. - Hydrogen Bonds. - Summary. - Problems. - 6 The Solid State. - Ionic Solids. - Metals. - Molecular Crystals. - Covalent Solids. - Crystal Structures. - Close-packed Structures. - The Equivalence of CCP and FCC Unit Cell. - The Unit Cell of HCP. - Sites in Close-Packed Structures. - Body-centered Cubic Lattice. - The Diamond Lattice. - Structures of Elements and Compounds. - The Elements. - Ionic Crystals. - Radius Ratio and Crystal Structures. - Covalent Solids. - Molecular Lattices. - A Biological Macromolecule DNA. - Problems. - 7 Experimental Methods of Valency. - Spectroscopic Methods. - Microwave Spectroscopy. - Infrared Spectroscopy. - Visible-ultraviolet Spectroscopy. - Nuclear Magnetic Resonance Spectroscopy. - Mass Spectroscopy. - Diffraction Techniques. - Problems. - Appendix I: Angular Momentum and the Bohr Atom. - Appendix II: Spherical Polar Coordinates. - Appendix III: Atomic Orbitals and Magnetic Quantum Numbers. Language: English