Chemical Elements. A Popular Illustrated Guide

The iron atom in human blood was synthesized in the depths of stars, solid hydrogen is the lightest solid substance, and 3500 proteins are formed in one cell. 4000 years B.C. in Ancient China, indigo and kermes were used, and in Egypt - copper. The Periodic Table contains 7 periods, 18 groups, and 118 elements, from which, as it is known, everything in the world is composed. The biographies and characteristics of chemical elements were described by Ilya Abramovich Leenson - candidate of chemical sciences, senior researcher at the chemical faculty of Moscow State University, associate professor at the Higher Chemical College of the Russian Academy of Sciences, author of scientific and popular science articles, books, and educational aids.