Home 66 Dy Dysprosium back to the periodic table
 
Atomic number   66
Symbol   Dy
Atomic weight   162.50
Density [g/cm3]   8.56
Melting point [°C]   1409
Boiling point [°C]   2600
1st Ionization energy [eV]   5.95
Electronic configuration   [Xe] 4f10 6s2
Oxidation number (most stable)   3
Atomic radius [pm]   177.3
Ionic radius [pm]   92 (3+)
Abundance in crustal rocks [ppm]   ---
Origin of the name   (greek) dysprosodos = hard to obtain
Discovery   1886 by the French P. E. Lecoq de Boisbaudran
Uses   small technical significance, only in special magnets and in the nuclear technology.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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