Brett F. Thornton and Shawn C. Burdette look back at the discovery — and the many different names — of element 86. The specific −io suffix names were largely ignored, but the concept of amalgamated ...

Radon (Rn) is a radioactive, colorless, odorless and tasteless gas that occurs naturally as the decay product of the elements radium, uranium and thorium. It is a noble (or inert) gas, meaning it is ...