Arsenic: Properties


Atomic

  • Atomic Mass: 74.9216
  • Electronegativity:
    • Pauling: 2.18
    • Allred: 2.2
    • Absolute: 5.3 eV
  • Electron Affinity: 78 kJ mol-1
  • Polarizability: 4.3 3
  • Effective Nuclear Charge:
    • Slater: 6.3
    • Clementi: 7.45
    • Froese Fischer: 8.98
  • Radius:
    • As 5 +: 46 pm
    • As 3 +: 69 pm
    • Atomic: 125 pm
    • Covalent: 121 pm
    • Van der Waals: 200 pm
  • Successive Ionization Energies:
    • As - As + : 703.2 kJ mol-1
    • As+1 - As+2 : 1610 kJ mol-1
    • As+2 - As+3 : 2466 kJ mol-1
    • As+3 - As+4 : 4372 kJ mol-1
    • As+4 - As+5 : 5400 kJ mol-1
    • As+5 - As+6 : 8520 kJ mol-1
    • As+6 - As+7 : (10300) kJ mol-1
    • As+7 - As+8 : (12300) kJ mol-1
    • As+8 - As+9 : (14300) kJ mol-1
    • As+9 - As+10 : (16300) kJ mol-1
  • Common Ions : As 5 +, As 3 +