1. 
   francium
   [n] - a radioactive element of the alkali-metal group discovered as a disintegration product of actinium
   Found op http://www.webdictionary.co.uk/definition.php?query=francium
   
   
2. 
   Francium
   The heaviest alkali metal with no stable isotopes. Symbol Fr
   Found op http://www.diracdelta.co.uk/science/source/f/r/francium/source.html
   
   
3. 
   francium
   <chemical> Francium. A radioactive alkali metal with the atomic symbol fr, atomic number 87, and atomic weight 223. The mass numbers of other known isotopes are 204-213, 217-222, and 224. Its valence is +1. ... Chemical name: Francium ... (12 Dec 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?francium
   
   
4. 
   francium
   (Fr) (fran´se-әm) a chemical element, atomic number 87, atomic weight 223.
   Found op http://www.encyclo.co.uk/local/21001
   
   
5. 
   francium
   heaviest chemical element of Group 1 (also called Group Ia) in the periodic table, the alkali metal group. It exists only in short-lived radioactive ... [2 related articles]
   Found op http://www.britannica.com/eb/a-z/f/55
   
   
6. 
   francium
   (Fr) Type: Term Pronunciation: fran′sē-ŭm Definitions: 1. Radioactive element of the alkali metal series; atomic no. 87; half-life of most stable known isotope, 223Fr, is 21.8 min.
   Found op http://www.medilexicon.com/medicaldictionary.php?t=35438
   
   
7. 
   Francium
   Francium (m {respell|FRAN|see-əm}) is a chemical element with symbol Fr and atomic number 87. It was formerly known as eka-caesium and actinium K. It is one of the two least electronegative elements, the other being caesium. Francium is a highly radioactive metal that decays into astatine, radium,...
   Found op http://en.wikipedia.org/wiki/Francium
   
   
8. 
   francium
   francium (frăn'sēum) [from France], radioactive chemical element; symbol Fr; at. no. 87; mass no. of most stable isotope 223; m.p. about 27°C (estimated); b.p. 677°C (estimated); sp. gr. unknown; valence +1. Francium is extremely rare; its most stable isotope (half-life about...
   Found op http://www.infoplease.com/ce6/sci/A0819448.html
   
   
9. 
   francium
   Radioactive metallic element, atomic number 87, relative atomic mass 223. It is one of the alkali metals and occurs in nature in small amounts as a decay product of actinium. Its longest-lived isotope has a half-life of only 21 minutes. Francium was discovered and named in 1939 by Marguérite Perey,...
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0010143.html
   
   
10. 
    francium
    1) Atomic number 87 2) Fr 3) Metal 4) Metallic element
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/francium/1
    
    

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