Home 9 F Fluorine back to the periodic table
 
Atomic number   9
Symbol   F
Atomic weight   18.9984032
Density [g/l]   1.58
Melting point [°C]   -219.6
Boiling point [°C]   -188.1
1st Ionization energy [eV]   17.422
Electronic configuration   [He] 2s2 2p5
Oxidation number (most stable)   1-
Atomic radius [pm]   70.9
Ionic radius [pm]   131 (1-)
Abundance in crustal rocks [ppm]   544
Origin of the name   (lat.) fluere = to flow
Discovery   1886 by the French Henri Moissan
Uses   Fluorine gas is used for the synthesis of fuorine-containing organic substances as well as for the production of uranium hexafluoride. The mineral fluorite is used as a flux (e. g. in the field of metallurgy).
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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