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Meaning of ATOMIC NUMBER 9

 
WordNet Dictionary
 
 Definition: 
[n]  a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
 
 Synonyms: F, fluorine
 
 See Also: chemical element, cryolite, element, fluor, fluorapatite, fluorite, fluorspar, gas, Greenland spar, halogen

 

 

 

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