Strangely enough, the idea that black nitrogen didn’t exist has long been considered a mystery. The periodic table is arranged in recurring “periods” where each column is made up of elements ...

In the periodic table of elements there is one golden rule for carbon, oxygen, and other light elements. Under high pressures they have similar structures to heavier elements in the same group of ...

Sir William Ramsay, the Scottish chemist who discovered several noble gases, is the subject of today’s Google doodle. The noble gases are a group of chemical elements with very low reactivity.