 | 5 |
B | Boron
|
| Atomic Weight: 10.811 | Shells: 2,3
|
| Group: Non-Metal | Filling orbital: 2p1
|
| Crystal Structure: Rhombohedral | Covalent radius: 0.82 Å
|
| Oxidation States: +3 | Atomic radius: 1.17 Å
|
| Electronegativity, Pauling: 2.04 | Atomic volume: 4.6 cm³/mol
|
| State at RT: Solid | First ionization potential: 8.298 V
|
| Melting Point: 2573°K | 2nd ionization potential: 25.154 V
|
| Boiling Point: 3931°K | 3rd ionization potential: 37.93 V
|
| Density @ 2.34°K: 5.72 g/cm³ | Specific heat: 1.02 J/gK
|
| Electrical conductivity: 1.0e-12 106/cm ohm | Heat of vaporization: 489.70 kJ/mol
|
| Thermal conductivity: 0.270 W/cmK | Heat of fusion: 50.20 kJ/mol
|
|
|
| Element Nuclides
|
| Nuclide | Abundance | Weight | Spin | Half-Life | Decay Modes
|
| B10 | 19.7% | 10.0129 | 3 | | Stable
|
| B11 | 80.3% | 11.0093 | 1.5 | | Stable
|