Electronic data
Shells: 2, 8, 18, 30, 8, 2
Orbitals: [Xe] 4f12 6s2
Electronegativity: --, 1.1
1. Ionization potential: 6.1078 eV
2. Ionization potential: 11.929 eV
3. Ionization potential: 22.739 eV
Oxidation states: 3
Electrical conductivity: 0.0117 10^6
Thermal data
Melting point: 1529 °C
Boiling point: 2868 °C
Specific heat: 0.17 J/gK
Heat of fusion: 19.90 kJ/mol
Heat of vaporization: 261.0 kJ/mol
Thermal conductivity: 0.143 W/cmK
Steric data
Atomic radius: 2.45 Å
Ionic radius: 1.00 Å (+3)
Covalent radius: 1.57 Å
Atomic volume: 18.4 cm³/mol
Density (293 K): 9.05 g/cm³
Crystal structure: hexagonal
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