Look up: radium

1. radium
   (Ra) Type: Term Pronunciation: rā′dē-ŭm Definitions: 1. A metallic element, atomic no. 88, extracted in very minute quantities from pitchblende; 226Ra, its longest-lived isotope, is produced as an intermediate in the uranium series by the emission of an α particle fr...
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2. Radium
   Radium consists of 16 isotopes, the most abundant being the Radioactive Radium-226. This is a metallic substance, has a Half-Life of 1602 years and Decays via a complicated chain, eventually leading to stable Lead-206. Along the way it decays to Radon Gas (Rn-222). Radium was isolated from pitchblen...
   Found on http://www.ionactive.co.uk/glossary.html
   
   
3. radium
   [n] - an intensely radioactive metallic element that occurs in minute amounts in uranium ores
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. Radium
   A radioactive element of the alkaline earth metals. White in colour and properties close to barium. Symbol Ra
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5. Radium
   A radioactive decay product of uranium often found in uranium ore. It has several radioactive isotopes. Radium-226 decays to radon-222
   Found on http://www.encyclo.co.uk/local/20725
   
   
6. Radium
   The first substance discovered to give off radiation. Used to treat cancer.
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7. Radium
   A radioactive decay product of uranium often found in uranium ore. It has several radioactive isotopes. Radium-226 decays to radon-222.
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8. Radium
   Radium: The celebrated radioactive element discovered by Marie and Pierre Curie in 1898.
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9. radium
   a radioactive element of atomic number 88,and chemical symbol Ra Category: Physics • chemical element:atomic number 88 Category: Chemistry
   Found on http://www.mijnwoordenboek.nl/definition
   
   
10. Radium
    Ra`di·um noun [ New Latin , from Latin radius ray.] (Chemistry) An intensely radioactive metallic element found (combined) in minute quantities in pitchblende, and various other uranium minerals. Symbol, Ra ; atomic weight, 226.4. Ra...
    Found on http://www.encyclo.co.uk/webster/R/4
    
    
11. radium
    The celebrated radioactive element discovered by Marie and pierre curie in 1898. ... (12 Dec 1998) ...
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12. radium
    Ra noun an intensely radioactive metallic element that occurs in minute amounts in uranium ores
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13. radium
    (Ra) (ra´de-әm) a chemical element, atomic number 88, atomic weight, 226. Radium is highly radioactive and is found in uranium degradation processes. Radium-226 has a half-life of 1622 years. It and its short-lived decay products emit alpha particles, beta particles, and gamma rays. One of the dec...
    Found on http://www.encyclo.co.uk/local/21001
    
    
14. Radium
    • (n.) An intensely radioactive metallic element found (combined) in minute quantities in pitchblende, and various other uranium minerals. Symbol, Ra; atomic weight, 226.4. Radium was discovered by M. and Mme. Curie, of Paris, who in 1902 separated compounds of it by a tedious process from pitc...
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15. radium
    radioactive chemical element, heaviest of the alkaline-earth metals of main Group IIa of the periodic table. Radium is a silvery white metal that ... [9 related articles]
    Found on http://www.britannica.com/eb/a-z/r/4
    
    
16. Radium
    An element often found in uranium ore. It has several radioactive isotopes. Radium-226 decays to Radon-222.
    Found on http://www.encyclo.co.uk/local/21076
    
    
17. radium
    radium (rā'dēum) [Lat. radius=ray], radioactive metallic chemical element; symbol Ra; at. no. 88; at. wt. 226.0254; m.p. 700°C; b.p. 1,140°C; sp. gr. about 6.0; valence +2. Radium is a lustrous white radioactive metal. It is an alkaline-earth metal; in its chemical properties...
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18. Radium
    Radium is a radioactive gaseous element with the symbol Ra.
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19. radium
    White, radioactive, metallic element, atomic number 88, relative atomic mass 226.02. It is one of the alkaline-earth metals, found in nature in pitchblende and other uranium ores. Of the 16 isotopes, the commonest, Ra-226, has a half-life of 1,620 years. The element was discovered and named in 1898 by Pierre and Marie Curie, who were in...
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20. Radium
    Radium consists of 16 isotopes, the most abundant being the Radioactive Radium-226. This is a metallic substance, has a Half-Life of 1602 years and Decays via a complicated chain, eventually leading to stable Lead-206. Along the way it decays to Radon Gas (Rn-222). Radium was isolated from pitchblen...
    Found on http://www.ionactive.co.uk/glossary_atoz
    
    
21. Radium
    `Radium` ( ) is a chemical element with atomic number 88, represented by symbol `Ra`. Radium is 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 of radium-226, whic...
    Found on http://en.wikipedia.org/wiki/Radium
    
    
22. Radium
    (horse) `Radium` was an outstanding Australian bred campdrafter and very influential ancestor of Australian Stock Horses. He was a bay stallion bred by Donald Beaton of Levedale, Gloucester, New South Wales. This son of the outstanding campdrafter, Cecil (1899, by Red Gauntlet from Meretha II...
    Found on http://en.wikipedia.org/wiki/Radium
    
    
23. Radium
    (software) `Radium` is a proprietary Internet radio player application, used for listening to internet radio streams. It emphasizes a minimalist user interface. The application does not have a main window, instead opting to provide the entire user interface through its main menu. Users can ei...
    Found on http://en.wikipedia.org/wiki/Radium