Home 39 Y Yttrium back to the periodic table
 
Atomic number   39
Symbol   Y
Atomic weight   88.90585
Density [g/cm3]   4.47
Melting point [°C]   1532
Boiling point [°C]   2930
1st Ionization energy [eV]   6.28
Electronic configuration   [Kr] 4d 5s2
Oxidation number (most stable)   3
Atomic radius [pm]   181
Ionic radius [pm]   92 (3+)
Abundance in crustal rocks [ppm]   31
Origin of the name   Ytterby, village in Sweden
Discovery   1794 by Mosander
Uses   usually as oxide or oxide sulfide as red phosphorus in color image tubes, in electronics as well as for the production of superconductors (Ba2YCu3O7).
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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