Nominal Granule Size[标称颗粒大小] | 15 |
Purity[纯度] | 99.0% |
Weight[重量] | 20 g - 100 g |
Physical Properties(物理性质) |
Boiling point ( C ) | 3700 |
Density ( g cm⁻³ ) | 2.340 - 2.370 @20℃ |
Thermal Properties(热性能) |
Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 8.300 @0-100℃ |
Latent heat of evaporation ( J g⁻¹ ) | 35000 |
Latent heat of fusion ( J g⁻¹ ) | 2090.00 |
Melting point ( C ) | 2180.00 |
Specific heat ( J K⁻¹ kg⁻¹ ) | 1030.0 @25℃ |
Atomic Properties(原子属性) |
Atomic number | 5 |
Atomic weight ( amu ) | 10.81000 |
Crystal structure | Tetragonal |
Electronic structure | He2s²2p¹ |
Ionisation potential ( No./eV ) | 4 / 259 |
Ionisation potential ( No./eV ) | 2 / 25.2 |
Ionisation potential ( No./eV ) | 1 / 8.30 |
Ionisation potential ( No./eV ) | 5 / 340 |
Ionisation potential ( No./eV ) | 3 37.9 |
Natural isotope distribution ( Mass No./% ) | 11 / 80.2 |
Natural isotope distribution ( Mass No./% ) | 10 / 19.8 |
Photo-electric work function ( eV ) | 4.50 |
Thermal neutron absorption cross-section ( Barns ) | 672.0000 |
Valences shown | 3 |
Mechanical Properties(机械性能) |
Hardness - Mohs ( Arc melted ) | 9.50 |
Material condition | Arc Melted |
Tensile modulus ( GPa ) ( Arc melted ) | 441.00 |
Tensile strength ( MPa ) ( Arc melted ) | 1580.00 - 2410.00 |
Electrical Properties(电气特性) |
Electrical resistivity ( μOhmcm ) | 1.8x10¹²@27℃ |