Erbium: Properties


Atomic

  • Atomic Mass: 167.26
  • Electronegativity:
    • Pauling: 1.24
    • Allred: 1.11
    • Absolute: <3.3 eV
  • Electron Affinity: <50 kJ mol-1
  • Polarizability: 22.7 3
  • Effective Nuclear Charge:
    • Slater: 2.85
    • Clementi: 8.48
    • Froese Fischer: 11.7
  • Radius:
    • Er 3 +: 89 pm
    • Atomic: 175.7 pm
    • Covalent: 157 pm
  • Successive Ionization Energies:
    • Er - Er + : 588.7 kJ mol-1
    • Er+1 - Er+2 : 1151 kJ mol-1
    • Er+2 - Er+3 : 2194 kJ mol-1
    • Er+3 - Er+4 : 4115 kJ mol-1
  • Common Ions : Er 3 +