1. V. V. Petrov was the follower of Lomonosov in studying electricity in our country. Petrov was the first to speak about the possibility of using the electric arc for lighting, he was the first to discover the possibility of getting metals out of ores by means of electricity.
2. Making giant molecules out of little ones is called polymerization. Academician Zelinsky’s works formed the basis for synthesizing a large number of new chemical compounds. The task of the scientist was studying the mechanism of polymerization and finding the conditions for processing polymer materials.
3. In 1869 Mendeleyev suggested using a new system of the classification of elements. After studying and analyzing a tremendous amount of material Mendeleyev succeeded in determining the correct atomic weight of nine elements. His hard work resulted in publishing the Periodic Law of Elements which made him world-famous.