In Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass.
Chemistry: Introduction to the Periodic Table - Dmitri Mendeleev
Dmitri Mendeleev (left) and John Newlines (right) were both researching the elements.
Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table. In a Russian scientist called Dmitri Mendeleev invented the periodic system that we still use today. Before him others had tried to 'order' the elements.
The periodic table invented by Dmitri Mendeleev was significant because it was the first to enable determination of gaps in the elements and make predictions. Other scientists had previously identified periodicity of elements, but on March 6, Dmitri Mendeleev (photo) presented the first periodic table. The history of the periodic table reflects over two centuries of growth in the understanding of the chemical and physical properties of the elements, with major.