Electron theory of metals textbook for advanced undergraduate students of condensed-matter physics and related disciplines.This textbook for advanced undergraduate and graduate students gives a complete account of electrons in metals. The book presents a very accessible approach to this subject and compares the theory with experimental results as much as possible. This textbook contains numerous exercises (with hints and answers) and an extensive list of references and tables containing numerical data of the various physical properties of interest.This textbook for advanced undergraduate and graduate students gives a complete account of electrons in metals. The book presents a very accessible approach to this subject and compares the theory with experimental results as much as possible. This textbook contains numerous exercises (with hints and answers) and an extensive list of references and tables containing numerical data of the various physical properties of interest.This text presents a complete account of electron theory in both periodic and nonperiodic metallic systems. The author's accessible approach allows for comparisons with experimental results as much as possible. The book starts with the basics of one-electron band theory and progresses to cover high Tc superconductors and quasicrystals. The relationship between theory and potential applications is also emphasized. The material assumes some knowledge of elementary quantum mechanics as well as the principles of classical mechanics and electromagnetism. Numerous exercises and an extensive list of references and numerical data are key features.1. Introduction to electron theory of metals; 2. Bonding styles and the free electron model; 3. Electrons in a metal at finite temperatures; 4. Periodic lattice and lattice vibrations in crystals; 5. Conduction electrons in a periodic potential; 6. Electronic structure of pure elements in periodic table; 7. Principles of measuring electronic structure related phenomlĂ'