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 ...

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 ...

Green means that plenty is available – including the likes of oxygen (O), hydrogen (H), aluminium (Al) and calcium (Ca). Read more: The periodic table is 150 – but it could have looked very ...