His table leaves a hole under yttrium and has three 15-element rows in an f-block floating beneath the main table. Nor is he so constrained by atomic numbers. For instance, element 164 is followed ...

The periodic table stares down from the walls of just about every chemistry lab. The credit for its creation generally goes to Dimitri Mendeleev, a Russian chemist who in 1869 wrote out the known ...

Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications. When you purchase through links on our site, we ...

Periodic Table Day is celebrated every year on … well, we'll let you figure that out in the quiz just below! Plenty of folks have a fascination with the periodic table all year long.

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

Wothers finds many such twists in the stories hidden behind the squares of the periodic table. Antimony (element No. 51) is a lustrous mineral; four thousand years ago, people carved vases out of ...

A new version of the periodic table of elements has predicted hundreds of highly charged ions that could be used to create the next generation of optical atomic clocks. The periodic table, first ...

The origins of the periodic table, however, go back to the 1860s. Russian chemist Dmitri Mendeleev, building on the work of others, took the 63 known elements — including hydrogen, ...

The periodic table stares down from the walls of just about every chemistry lab. The credit for its creation generally goes to Dimitri Mendeleev, a Russian chemist who in 1869 wrote out the known ...

The periodic table is 150 – but it could have looked very different. Through the years, plenty of hopefuls have pitched their own ideas for how the most famous graph in science should look.