As four new chemical elements are named, here's all you need to know.
Some 18 elements have had placeholder names derived from the Latin to stop scientists fighting over what their discoveries should be called.
New elements found in the reactions of nuclear tests during World War II sparked the hunt for additions to the periodic table.
They might only last for a fraction of a second but four new elements have finally won their place in the periodic table. The hunt is now on to find even more.