At the modern scientific level, the foundations of the teachings on the structure of the atom are set out, chemical bonding and the structure of molecules, on the reactivity of substances in acid-basic and redox processes, Chemistry of inorganic substances in aqueous and non-aqueous solutions, chemistry of complex compounds, transition elements, including lanthanides and actinides, organometallic compounds, halogens, noble gases, model biological systems, etc. The book is a translation from the third, revised and supplemented American edition, published in 1983.