Electronic data
Shells: 2, 8, 18, 32, 18, 2
Orbitals: [Xe] 4f14 5d10 6s2
Electronegativity: 1.9, 1.4
1. Ionization potential: 10.4375 eV
2. Ionization potential: 18.759 eV
3. Ionization potential: 34.202 eV
Oxidation states: 2, 1
Electrical conductivity: 0.0104 10^6
Thermal data
Melting point: -38.87 °C
Boiling point: 356.58 °C
Specific heat: 0.139 J/gK
Heat of fusion: 2.295 kJ/mol
Heat of vaporization: 59.229 kJ/mol
Thermal conductivity: 0.0834 W/cmK
Steric data
Atomic radius: 1.76 Å
Ionic radius: 1.02 Å (+2)
Covalent radius: 1.49 Å
Atomic volume: 14.82 cm³/mol
Density (293 K): 13.546 g/cm³
Crystal structure: rhombohedral
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