Chemistry, Spectroscopy, and the Question of Reduction; The Electronic Configuration Model, Quantum Mechanics and Reduction; The Periodic Table and the Electron; How Good is the Quantum Mechanical Explanation of the Periodic System; Prediction and the Periodic Table; Lowdin's Remarks on the Aufbau Principle and a Philosopher's View of Ab Initio Quantum Chemistry; Mendeleev's Legacy; The Role of Triads in the Evolution of the Periodic Table: Past and Present; The Past and Future of the Periodic Table; The Dual Sense of the Term "ElementsA", Attempts to Derive the Madelung Rule, and the Optimal Form of the Periodic Table, If Any.
