Terbium: Properties


Atomic

  • Atomic Mass: 158.92534
  • Electronegativity:
    • Allred: 1.1
    • Absolute: <3.2 eV
  • Electron Affinity: <50 kJ mol-1
  • Polarizability: 25.5 3
  • Effective Nuclear Charge:
    • Slater: 2.85
    • Clementi: 8.3
    • Froese Fischer: 11.39
  • Radius:
    • Tb 3 +: 93 pm
    • Tb 4 +: 81 pm
    • Atomic: 178.2 pm
    • Covalent: 159 pm
  • Successive Ionization Energies:
    • Tb - Tb + : 564.6 kJ mol-1
    • Tb+1 - Tb+2 : 1112 kJ mol-1
    • Tb+2 - Tb+3 : 2114 kJ mol-1
    • Tb+3 - Tb+4 : 3839 kJ mol-1
  • Common Ions : Tb 3 +, Tb 4 +