10. 
    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 th...
    Found op http://www.encyclo.co.uk/local/21001
    
    
11. 
    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...
    Found op http://thinkexist.com/dictionary/meaning/radium/
    
    
12. 
    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 op http://www.britannica.com/eb/a-z/r/4
    
    
13. 
    Radium
    Radium (m {Respell|RAY|dee-əm}) is a chemical element with atomic number 88, represented by the symbol Ra. 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 i...
    Found op http://en.wikipedia.org/wiki/Radium
    
    
14. 
    Radium
    An element often found in uranium ore. It has several radioactive isotopes. Radium-226 decays to Radon-222.
    Found op http://www.encyclo.co.uk/local/21076
    
    
15. 
    radium
    (Ra) Electron shell diagram for radium. Source: Wikipedia A rare, brilliant-white, luminescent, highly radioactive, metallic element having 16 isotopes (4 of them natural) of which radium 226 (Ra²⁶⁶), with a half-life of 1,622 years is the most c...
    Found op http://www.daviddarling.info/encyclopedia/R/radium.html
    
    
16. 
    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...
    Found op http://www.infoplease.com/ce6/sci/A0840951.html
    
    
17. 
    Radium
    Radium is a radioactive gaseous element with the symbol Ra.
    Found op http://www.probertencyclopaedia.com/browse/GR.HTM
    
    
18. 
    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 ...
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0010141.html
    
    
19. 
    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 op http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=r
    
    
20. 
    Radium
    [album] Radium is Finnish industrial metal band Ruoska`s third album, and was released on March 22, 2005. Two remixes of the song "Kosketa" were included on the Tuonen viemää and Helvettiin jäätynyt singles. A remix of "Irti" was also included on Helvettiin jäätynyt single. ==Track lis...
    Found op http://en.wikipedia.org/wiki/Radium_(album)
    
    
21. 
    Radium
    [disambiguation] Radium is a chemical element with atomic number 88. Radium may also refer to: ...
    Found op http://en.wikipedia.org/wiki/Radium_(disambiguation)
    
    
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 op http://en.wikipedia.org/wiki/Radium_(horse)
    
    

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