Radium seventh of a gram of radium. One kilogram of the Earth's crust contains about 900 picograms of radium, and one liter of sea water contains about 89 femtograms of radium. Radium was discovered by Marie Sklodowska-Curie and her husband Pierre Curie on 21 December 1898, in a uraninite (pitchblende) sample. While studying the mineral earlier, the Curies removed uranium from it and found that the remaining material was still radioactive. They separated out an element similar to bismuth from pitchblende in July 1898, that turned out to be polonium. They then separated out a radioactive mixture consisting mostly of two
V. G. Khlopin Radium Institute in Bondyuga (Tatarstan), which was used by and others to generate Russia's first high-enriched radium compound. The Radium Institute was renamed to V. G. Khlopin in his honor in 1950. At the Radium Institute, the first European cyclotron was proposed by George Gamow and in 1932, being constructed with the help of Igor Kurchatov, operational by 1937. V. G. Khlopin Radium Institute The V. G. Khlopin Radium Institute, also known as the First Radium Institute, is a research and production institution located in Saint Petersburg specializing in the fields of nuclear physics, radio- and geochemistry, and on ecological topics, associated