A century and a half ago, a Russian chemistry professor published a classification of all the known elements, organized by atomic weight. Today, the system that he created for his students — plus some ...

The first version of Mendeleev’s periodic table, published in 1869, was reportedly completed in just one day. Historians have pieced together what happened during that day. On the morning of February ...

More than a thousand different versions of the periodic table have been created since Dmitri Mendeleev drew the first 150 years ago – but why is one version more familiar to us than practically every ...

The name of Dmitrii Mendeleev is forever associated with the periodic table, which is found in chemistry laboratories and classrooms around the world. Yet this famous invention, which made sense and ...

Basic sciences - chemistry, physics, mathematics, and biology – allow us to understand natural phenomena and drive innovation. Investing in these disciplines is essential to create the tools we need ...

“The Man Who Brought Law and Order to Chemistry.” This is the title of an article in the June 1971 issue of the UNESCO Courier devoted to Dmitri Mendeleev, the man who enabled “the passing of the ...