Home 65 Tb Terbium back to the periodic table
 
Atomic number   65
Symbol   Tb
Atomic weight   158.92534
Density [g/cm3]   8.25
Melting point [°C]   1360
Boiling point [°C]   3800
1st Ionization energy [eV]   5.85
Electronic configuration   [Xe] 4f9 6s2
Oxidation number (most stable)   4, 3
Atomic radius [pm]   178.2
Ionic radius [pm]   93 (3+)
Abundance in crustal rocks [ppm]   1.2
Origin of the name   named after the Swedish village Ytterby
Discovery   1843 by Mosander 
Uses   no technical significance.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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