Time to re-write the textbooks. The International Union of Pure and Applied Chemistry (IUPAC) has confirmed the existence of four new elements with the atomic numbers 113, 115, 117, and 118.

Elements A particle diagram for an element will have only one type of atom. For example, pure oxygen contains only oxygen atoms. Oxygen is shown here as a red circle.

Molybdenum is a silvery-white metal that is ductile and highly resistant to corrosion. It has one of the highest melting points of all pure elements — only the elements tantalum and tungsten ...

Elements A particle diagram for an element will have only one type of atom. For example, pure oxygen contains only oxygen atoms. Oxygen is shown here as a red circle.