What is radium?

  • (noun): An intensely radioactive metallic element that occurs in minute amounts in uranium ores.
    Synonyms: Ra, atomic number 88


Radium is a chemical element with symbol Ra and atomic number 88. Radium is an almost pure-white alkaline earth metal, but it readily oxidizes on exposure to air, becoming black in color. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226, which has a half-life of 1601 years and decays into radon gas. Because of such instability, radium is luminescent, glowing a faint blue.

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Some articles on radium:

Radium, Colorado
... Radium is a small rural unincorporated community in southwestern Grand County, Colorado, United States ... The Radium State Recreation Area, a state park of Colorado, is on the south bank of the Colorado River across from the community ... The community is named for the element radium, which was formerly mined in Colorado in the early 20th century ...
Radium Jaw - See Also
... United States Radium Corporation Radiation sickness Radium Dial Company Radium dials ...
Barium Bromide - Uses
... Historically, barium bromide was used to purify radium in a process of fractional crystallization devised by Marie Curie ... Since radium precipitates preferentially in a solution of barium bromide, the ratio of radium to barium in the precipitate would be higher than the ratio ...
The Radium Woman
... The Radium Woman A youth edition of the life of Madame Curie is a biography of the scientist Marie Curie adapted for children by Eleanor Doorly from the 1937 biography by Ève Curie ... Doorly and The Radium Woman won the fourth annual Carnegie Medal from the Library Association, recognising the year's best children's book by a British subject ...
... Radium was first industrially produced in the beginning of the 20th century by Biraco in its Olen plant near Antwerp in Belgium ... UMHK offered to Marie Curie her first gramme of radium ... The radium production plant was demolished during the years 1970 and the radium production wastes confined in a shallowly buried vault ...