65
Tb
158.93
Terbium
Element 65 · 158.93 u · f-block
lanthanide
Named after Ytterby, Sweden. Used in green phosphors for displays and in Terfenol-D, a magnetostrictive alloy.
Phase (STP)
Solid
Melting Point
1356 °C
Boiling Point
3230 °C
Density
8.229 g/cm³
Electronegativity
1.1
Atomic Radius
175 pm
Ionization Energy
566 kJ/mol
Electron Affinity
112 kJ/mol
Discovered
1843 · Carl Gustaf Mosander
Electron Configuration
[Xe] 4f9 6s2
Electron Orbitals
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