Electronic data
Shells: 2, 8, 18, 28, 8, 2
Orbitals: [Xe] 4f10 6s2
Electronegativity: --, 1.1
1. Ionization potential: 5.9389 eV
2. Ionization potential: 11.67 eV
3. Ionization potential: 22.802 eV
Oxidation states: 3
Electrical conductivity: 0.0108 10^6
Thermal data
Melting point: 1412 °C
Boiling point: 2567 °C
Specific heat: 0.17 J/gK
Heat of fusion: 11.060 kJ/mol
Heat of vaporization: 230.0 kJ/mol
Thermal conductivity: 0.107 W/cmK
Steric data
Atomic radius: 2.49 Å
Ionic radius: 1.03 Å (+3)
Covalent radius: 1.59 Å
Atomic volume: 19.0 cm³/mol
Density (293 K): 8.536 g/cm³
Crystal structure: hexagonal
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