Home 63 Eu Europium back to the periodic table
 
Atomic number   63
Symbol   Eu
Atomic weight   151.965
Density [g/cm3]   5.25
Melting point [°C]   822
Boiling point [°C]   1440
1st Ionization energy [eV]   5.67
Electronic configuration   [Xe] 4f7 6s2
Oxidation number (most stable)   3, 2
Atomic radius [pm]   204
Ionic radius [pm]   117 (2+)
Abundance in crustal rocks [ppm]   2.1
Origin of the name   named after Europa
Discovery   1901 by E. Demarcay 
Uses   in phosphors of colour image tubes and as neutron absorbers in the nuclear technology.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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