Electronic data
Shells: 2, 8, 18, 8, 2
Orbitals: [Kr] 5s2
Electronegativity: 1.0, 1.0
1. Ionization potential: 5.6948 eV
2. Ionization potential: 11.03 eV
3. Ionization potential: 43.60 eV
Oxidation states: 2
Electrical conductivity: 0.0762 10^6
Thermal data
Melting point: 769 °C
Boiling point: 1384 °C
Specific heat: 0.30 J/gK
Heat of fusion: 8.30 kJ/mol
Heat of vaporization: 144.0 kJ/mol
Thermal conductivity: 0.353 W/cmK
Steric data
Atomic radius: 2.45 Å
Ionic radius: 1.26 Å (+2)
Covalent radius: 1.91 Å
Atomic volume: 33.7 cm³/mol
Density (293 K): 2.6 g/cm³
Crystal structure: cubic face centered
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