Germanium: Properties


Atomic

  • Atomic Mass: 72.61
  • Electronegativity:
    • Pauling: 2.01
    • Allred: 2.02
    • Absolute: 4.6 eV
  • Electron Affinity: 116 kJ mol-1
  • Polarizability: 6.1 3
  • Effective Nuclear Charge:
    • Slater: 5.65
    • Clementi: 6.78
    • Froese Fischer: 7.92
  • Radius:
    • Ge 2 +: 90 pm
    • Atomic: 122.5 pm
    • Covalent: 122 pm
    • Ge 4 -: 272 pm
  • Successive Ionization Energies:
    • Ge - Ge + : 762.1 kJ mol-1
    • Ge+1 - Ge+2 : 1537 kJ mol-1
    • Ge+2 - Ge+3 : 3302 kJ mol-1
    • Ge+3 - Ge+4 : 4410 kJ mol-1
    • Ge+4 - Ge+5 : 9020 kJ mol-1
    • Ge+5 - Ge+6 : (11900) kJ mol-1
    • Ge+6 - Ge+7 : (15000) kJ mol-1
    • Ge+7 - Ge+8 : (18200) kJ mol-1
    • Ge+8 - Ge+9 : (21800) kJ mol-1
    • Ge+9 - Ge+10 : (27000) kJ mol-1
  • Common Ions : Ge 2 +, Ge 4 -