Radium is a chemical element with the symbol RA with the atomic number of 88 and the atomic mass is 226. Radium was first discovered by ​Marie Sklodowska Curie and Pierre Curie. Marie being a Polish chemist and Pierre as a French chemist. Radium was found in 1898. Mixtures of Radium and Beryllium will emit neutrons and is used as a neutron source. Radium is about one million times more active than uranium. A single gram of Radium-226 will produce 0.0001 mililiters of randon a day. In the past radium has been used in toothpaste, choclate, water and more.Today Radium is used to cure cancer and stop diseases. This helps society to cure cancer without it most would have died young or so. Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Radium is the most heaviest and most reactive in the alkamine earth metals family.Radium is rare becauses of its high reactivity and short half life.