Chemical elements. Popular illustrated guide. Leleson I.A.

The atom of iron in the human blood is synthesized in the bowels of stars, solid hydrogen is the lightest solid, and 3,500 proteins are formed in one cell. For 4000 years BC In ancient China, Indigo and Kermes were used, and in Egypt - copper. In the periodical table 7 periods, 18 groups and 118 elements, of which, as you know, everything consists in the world.

biographies and characters of chemical elements were described by Ilya

Abramovich Leenson - Candidate of Chemical Sciences, Senior Researcher of the Faculty of Chemistry of Moscow State University, Associate Professor of the Higher Chemical College of the Russian Academy of Sciences, Author of Scientific and Scientific -Popular Articles, Books and textbooks.