The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri ...

Many scientists worked on the problem of organizing the elements, but Dmitri Mendeleev published his first version of the periodic table in 1869, and is most often credited as its inventor. Since then ...

The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev. Mendeleev intended the table to ...

The periodic table as we know it is widely credited to Dmitri Mendeleev, a Russian chemist who kept reference cards on the elements and their atomic weight. In 1869, he noticed that the elements ...

The elements on the periodic table of elements are listed in ways that emphasize certain relationships. There are families, periods (the horizonal rows) and groups (the vertical columns).

The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri Mendeleev. It arranges all natural and synthetic elements by their atomic ...