On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table.

Ever since physicist Ernest Rutherford discovered the atomic nucleus in 1911, studying its structure and behavior has ...

February 7 is National Periodic Table Day, when we celebrate the efforts of scientists over the centuries to figure out how different elements ...

The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

This iconic chart, first proposed by Dmitri Mendeleev in 1869, organises elements based on atomic structure, chemical properties, and periodic trends. It remains an essential tool for scientists ...

Dmitri Ivanovich Mendeleev was born on 8 February, 1834 at Verkhnie Aremzyani, in the Russian province of Siberia. In 1869, he published the Mendeleev's table, the first recognized periodic table ...