contains information about all the elements known to mankind. Today, there are 107 of them, with some obtained artificially. As the properties of each of them differ, so do their histories and destinies. Some elements, such as copper, iron, sulfur, carbon, are known from prehistoric times. The age of others is measured only for centuries, despite the fact that they have not yet been discovered, humanity used them in time immemorial. Suffice it to recall oxygen, discovered only in the XVIII century .. Still others are open 200-200 years ago, but only in our time has become of paramount importance. These are uranium, aluminum, boron, lithium, beryllium. In the fourth, such as, for example, europium and scandium, the working biography is just beginning. Fifth obtained artificially by methods of nuclear-physical synthesis: technetium, plutonium, mendelium, chicken... In a word, how many elements, so many personalities, so many stories, so many unique combinations of propertiesIn the first book, materials were included about the first 46, in order of atomic numbers, elements, in the second - about all the others.