65Tb

Terbium

Lanthanide

Terbium (Tb) is element 65, a lanthanide, in period 6 of the periodic table. Its standard atomic weight is 158.925, it melts at 1356 °C and boils at 3230 °C. Discovered by Carl Gustaf Mosander, 1843.

Atomic Number65

SymbolTb

NameTerbium

Atomic Weight158.925 u

CategoryLanthanide

Period6

Melting Point1356 °C

Boiling Point3230 °C

Density8.229 g/cm³

Electron Config[Xe] 4f9 6s2

Discovered ByCarl Gustaf Mosander, 1843

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