Electronic data
Shells: 2, 8, 18, 18, 2
Orbitals: [Kr] 4d10 5s2
Electronegativity: 1.9, 1.5
1. Ionization potential: 8.9937 eV
2. Ionization potential: 16.908 eV
3. Ionization potential: 37.48 eV
Oxidation states: 2
Electrical conductivity: 0.138 10^6
Thermal data
Melting point: 320.9 °C
Boiling point: 765 °C
Specific heat: 0.23 J/gK
Heat of fusion: 6.192 kJ/mol
Heat of vaporization: 99.570 kJ/mol
Thermal conductivity: 0.968 W/cmK
Steric data
Atomic radius: 1.71 Å
Ionic radius: 0.95 Å (+2)
Covalent radius: 1.48 Å
Atomic volume: 13.1 cm³/mol
Density (293 K): 8.65 g/cm³
Crystal structure: hexagonal