Hydrogen: Properties


Atomic

  • Atomic Mass: 1.00794
  • Electronegativity:
    • Pauling: 2.2
    • Absolute: 7.18 eV
  • Electron Affinity: 72.8 kJ mol-1
  • Polarizability: 0.7 3
  • Effective Nuclear Charge:
    • Slater: 1
    • Clementi: 1
    • Froese Fischer: 1
  • Radius:
    • H 1 -: 154 pm
    • Atomic: 78 pm
    • Covalent: 30 pm
    • Van der Waals: 120 pm
    • H 1 +: 1x10-05 pm
  • Atomic Ionization Energies:
    • 1s : 1312 kJ mol-1
  • Successive Ionization Energies:
    • H - H + : 1312 kJ mol-1
  • Common Ions : H 1 -, H 1 +