Atomic

• Atomic Mass: 238.0289
• Electronegativity:
  • Pauling: 1.38
  • Allred: 1.22
• Polarizability: 27.4 ų
• Effective Nuclear Charge:
  • Slater: 1.8
• Radius:
  • U ^{3 +}: 103 pm
  • U ^{4 +}: 97 pm
  • U ^{5 +}: 89 pm
  • U ^{6 +}: 80 pm
  • Atomic: 138.5 pm

• Successive Ionization Energies:
  • U -› U ⁺ : 584 kJ mol^-1
  • U⁺¹ -› U⁺² : 1420 kJ mol^-1
• Common Ions : U ^{3 +}, U ^{4 +}, U ^{5 +}, U ^{6 +}