| Diameter[直径] |
9.5mm |
| Length[长度] |
100 mm - 1000 mm |
| Purity[纯度] |
99.75% |
| Atomic Properties(原子属性) |
| Atomic number |
50 |
| Atomic weight ( amu ) |
118.69000 |
| Crystal structure |
Tetragonal |
| Electronic structure |
Kr4d??5s?5p? |
| Ionisation potential ( No./eV ) |
2 / 14.63 |
| Ionisation potential ( No./eV ) |
5 / 72.3 |
| Ionisation potential ( No./eV ) |
3 / 30.5 |
| Ionisation potential ( No./eV ) |
4 / 40.7 |
| Ionisation potential ( No./eV ) |
1 / 7.34 |
| Natural isotope distribution ( Mass No./% ) |
122 / 4.6 |
| Natural isotope distribution ( Mass No./% ) |
124 / 5.6 |
| Natural isotope distribution ( Mass No./% ) |
114 / 0.7 |
| Natural isotope distribution ( Mass No./% ) |
120 / 32.4 |
| Natural isotope distribution ( Mass No./% ) |
118 / 24.3 |
| Natural isotope distribution ( Mass No./% ) |
112 / 1.0 |
| Natural isotope distribution ( Mass No./% ) |
116 / 14.7 |
| Natural isotope distribution ( Mass No./% ) |
115 / 0.4 |
| Natural isotope distribution ( Mass No./% ) |
117 / 7.7 |
| Natural isotope distribution ( Mass No./% ) |
119 / 8.6 |
| Photo-electric work function ( eV ) |
4.30 |
| Thermal neutron absorption cross-section ( Barns ) |
0.6300 |
| Valences shown |
2 ,4 |
| Mechanical Properties(机械性能) |
| Bulk modulus ( GPa ) ( Polycrystalline ) |
58.2 |
| Hardness - Mohs ( Polycrystalline ) |
1.50 - 1.80 |
| Material condition |
Polycrystalline |
| Poisson's ratio ( Polycrystalline ) |
0.357 |
| Tensile modulus ( GPa ) ( Polycrystalline ) |
49.90 |
| Electrical Properties(电气特性) |
| Electrical resistivity ( μOhmcm ) |
12.6@20℃ |
| Superconductivity critical temperature ( K ) |
3.7220 |
| Temperature coefficient ( K?? ) |
0.00460 @0-100℃ |
| Thermal emf against Pt (cold 0C - hot 100C) ( mV ) |
0.42 |
| Physical Properties(物理性质) |
| Boiling point ( C ) |
2270 |
| Density ( g cm?? ) |
7.280 @20℃ |
| Thermal Properties(热性能) |
| Coefficient of thermal expansion ( x10?? K?? ) |
23.500 @0-100℃ |
| Latent heat of evaporation ( J g?? ) |
2497 |
| Latent heat of fusion ( J g?? ) |
59.60 |
| Melting point ( C ) |
231.90 |
| Specific heat ( J K?? kg?? ) |
213.0 @25℃ |
| Thermal conductivity ( W m?? K?? ) |
66.80 @0-100℃ |
