Atomic Number: 65

Name: Terbium

Atomic symbol: Tb

Atomic Weight: 158.925

Electron configuration: 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶4d¹⁰5s²5p⁶4f⁹6s²

Melting Point: 1360^oC

Boiling Point: 3041^oC

Density: 8.2 g/cm³

Ionic radius: 0.92 angstroms (+3); 0.84 angstroms (+4)

Metallic radius: 1.78 angstroms