Meaning of ATOMIC NUMBER 9
 WordNet Dictionary |
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| | 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 |
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| | Synonyms: | | F, fluorine |
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| | See Also: | | chemical element, cryolite, element, fluor, fluorapatite, fluorite, fluorspar, gas, Greenland spar, halogen | |
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