Electronic data
Shells: 2, 8, 3
Orbitals: [Ne] 3s2 3p1
Electronegativity: 1.5, 1.5
1. Ionization potential: 5.9858 eV
2. Ionization potential: 18.828 eV
3. Ionization potential: 28.447 eV
Oxidation states: 3
Electrical conductivity: 0.377 10^6
Thermal data
Melting point: 660.37 °C
Boiling point: 2519 °C
Specific heat: 0.90 J/gK
Heat of fusion: 10.790 kJ/mol
Heat of vaporization: 293.40 kJ/mol
Thermal conductivity: 2.37 W/cmK
Steric data
Atomic radius: 1.82 Å
Ionic radius: 0.54 Å (+3)
Covalent radius: 1.18 Å
Atomic volume: 10.0 cm³/mol
Density (293 K): 2.702 g/cm³
Crystal structure: cubic face centered
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