Radium is a chemical element with the symbol Ra and atomic number 88. All isotopes of radium are highly radioactive. History This article is a stub. You can help DC Database by expanding it. See Also Appearances of Radium Item Gallery: Radium Images featuring Radium Links and References None. Retrieved from "https://dc.fandom.com/wiki/Radium?oldid=2780402" Categories: Pages using DynamicPageList parser function Image Needed 1936 Item Debuts Items Real World New Earth Earth-One Earth-Two Earth-54 History Section Needed Materials Community content is available under CC-BY-SA unless otherwise noted.