Radium of radium Curie used the residues after extraction of uranium from pitchblende. The uranium had been extracted by dissolution in sulfuric acid leaving radium sulfate, which is similar to barium sulfate but even less soluble in the residues. The residues also contained rather substantial amounts of barium sulfate which thus acted as a carrier for the radium sulfate. The first steps of the radium extraction process involved boiling with sodium hydroxide followed by hydrochloric acid treatment to remove as much as possible of other compounds. The remaining residue was then treated with sodium carbonate to convert the barium sulfate into
Radium, Kansas Radium, Kansas Radium is a city in Stafford County, Kansas, United States. As of the 2010 census, the city population was 25. A post office was opened in Radium in 1910, and remained in operation until it was discontinued in 1990. Radium is located at (38.173698, -98.894222). According to the United States Census Bureau, the city has a total area of , all of it land. As of the census of 2010, there were 25 people, 15 households, and 7 families residing in the city. The population density was . There were 19 housing units at an average density of