Who is the Russian chemist credited with creating the periodic table?

The Russian chemist credited with creating the periodic table is Dmitri Mendeleev. In 1869, he arranged the known elements to reveal repeating patterns in their chemical properties.

Mendeleev’s achievement was more than making a neat list. He left gaps where he believed undiscovered elements belonged and predicted their properties, including approximate atomic masses, densities, and compounds. Those successful predictions gave his system unusual scientific credibility.

Other chemists had proposed earlier systems for organizing elements, including John Newlands and Lothar Meyer. Meyer independently developed a closely related periodic arrangement, and the history of the table reflects contributions from several scientists. Nevertheless, Mendeleev is conventionally recognized as its principal creator because his table was especially predictive, influential, and actively defended.

His first table was organized largely by atomic weight, whereas the modern table is ordered by atomic number. The underlying periodic idea survived that change: elements display recurring chemical behavior when arranged in the correct sequence. The synthetic element mendelevium, element 101, was later named in his honor.