Tungsten: Properties


Atomic

  • Atomic Mass: 183.85
  • Electronegativity:
    • Pauling: 2.36
    • Allred: 1.4
    • Absolute: 4.4 eV
  • Electron Affinity: 78.6 kJ mol-1
  • Polarizability: 11.1 3
  • Effective Nuclear Charge:
    • Slater: 4.35
    • Clementi: 9.85
    • Froese Fischer: 14.22
  • Radius:
    • W 4 +: 68 pm
    • W 6 +: 62 pm
    • Atomic: 137 pm
    • Covalent: 130 pm
  • Successive Ionization Energies:
    • W - W + : 770 kJ mol-1
    • W+1 - W+2 : (1700) kJ mol-1
    • W+2 - W+3 : (2300) kJ mol-1
    • W+3 - W+4 : (3400) kJ mol-1
    • W+4 - W+5 : (4600) kJ mol-1
    • W+5 - W+6 : (5900) kJ mol-1
  • Common Ions : W 4 +, W 6 +