Home 86 Rn Radon back to the periodic table
 
Atomic number   86
Symbol   Rn
Atomic weight   222.0176
Density [g/l]   9.23
Melting point [°C]   -71
Boiling point [°C]   -61.8
1st Ionization energy [eV]   10.748
Electronic configuration   [Xe] 4f14 5d10  6s2 6p6
Oxidation number (most stable)   2
Atomic radius [pm]   ---
Ionic radius [pm]   ---
Abundance in crustal rocks [ppm]   minor traces
Origin of the name   (lat.) radius = ray
Discovery   1900 by the German physicist Friedrich Ernst Dorn
Uses   no technical significance, used only in the medicine and in the research as tracers.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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