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Material Properties
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 82 |
| Crystal structure | Face centred cubic |
| Electronic structure | Xe 4f¹⁴ 5d¹⁰ 6s² 6p² |
| Valences shown | 2, 4 |
| Atomic weight( amu ) | 207.2 |
| Thermal neutron absorption cross-section( Barns ) | 0.18 |
| Photo-electric work function( eV ) | 4 |
| Natural isotope distribution( Mass No./% ) | 207/ 22.1 |
| Natural isotope distribution( Mass No./% ) | 208/ 52.4 |
| Natural isotope distribution( Mass No./% ) | 206/ 24.1 |
| Natural isotope distribution( Mass No./% ) | 204/ 1.4 |
| Atomic radius - Goldschmidt( nm ) | 0.175 |
| Ionisation potential( No./eV ) | 5/ 68.8 |
| Ionisation potential( No./eV ) | 3/ 31.9 |
| Ionisation potential( No./eV ) | 4/ 42.3 |
| Ionisation potential( No./eV ) | 2/ 15.03 |
| Ionisation potential( No./eV ) | 1/ 7.42 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Mohs | 1.5 |
| Material condition | Polycrystalline |
| Material condition | Sand cast |
| Poisson's ratio | 0.44 |
| Poisson's ratio | 0.44 |
| Bulk modulus( GPa ) | 45.8 |
| Bulk modulus( GPa ) | 45.8 |
| Tensile modulus( GPa ) | 16.1 |
| Tensile modulus( GPa ) | 16.1 |
| Tensile strength( MPa ) | 12 |
| Yield strength( MPa ) | 5.5 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 20.6@20°C |
| Superconductivity critical temperature( K ) | 7.196 |
| Temperature coefficient( K⁻¹ ) | 0.0042@0-100°C |
| Thermal emf against Pt (cold 0C - hot 100C)( mV ) | 0.44 |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 1740 |
| Density( gcm⁻³ ) | 11.35@20 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 327.5 |
| Latent heat of evaporation( J g⁻¹ ) | 862 |
| Latent heat of fusion( J g⁻¹ ) | 23.2 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 159@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 35.3@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 29@0-100°C |
Tolerances
Pellets
| Maximum Lump Size | Nominal |
|---|