Atomic Number 65     Atomic Mass 158.925342     Density 8.2294 g/mL

State solid     Color silvery white      Electronegativity 1.22

Melting Point 1360°C     Boiling Point 3123°C

Natural Isotope Tb-159 100%

Abbreviated Electron Configuration [Xe] 4f⁹ 6s²

Discovered by Carl Mosander in 1843.