硼,颗粒, B, 2N
| 品牌: | Goodfellow | | 纯度含量: | 99.0% | | 产地: | 英国 |
产品介绍
| 订货号 | 包装规格 | | Weight | | 284-607-52 | 20 g | | 256-203-53 | 50 g | | 537-716-10 | 100 g |
产品参数 | 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℃ |
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