The textbook systematically describes the course of inorganic chemistry (chemistry of elements) in accordance with the standard program of the discipline "Inorganic Chemistry" for the chemical faculties of classical state universities based on a long-period version of the Periodic System. Structural data, the basics of the method of valence bonds, the theory of the crystalline field, molecular orbitals, the modern version of the theory of polarization, the Gillespie method are widely used. The book reflects many years of experience in teaching inorganic chemistry at the Department of Inorganic Chemistry, Faculty of Chemistry, Moscow State University M.V. Lomonosov. For university chemistry students, it will be useful for graduate students, teachers and anyone who is interested in inorganic chemistry or works in this field.