Boron
Electron Configuration
|
General Properties
| Atomic Symbol | B |
| Atomic Weight | 10.811 g/mol |
| Element Number | 5 |
| Standard State | Solid |
| Standard Type | Strongly Basic |
| Date of Discovery | 1808 |
| Discoverer | Gay-Lussac |
Physical Properties
| Oxidation States | 3 |
| Boiling Point | 4275 K |
| Melting Point | 2365 K |
| Density | 2.34 g/cm³ |
| Electron Configuration | 1s2,2s2,p1 |
| Acid/Base Properties | Acidic |
| Crystal Structure | Rhombohedral |
| Electronegativity | 2.04 |
| Heat of Vaporization | 507.8 kJ/mol |
| Heat of Fusion | 22.6 kJ/mol |
| Electrical Conductivity | 5x10e-12 10^6omg-¹cm-¹ |
| Thermal Conductivity | 27.0 Wm-¹K-¹ (at 300 K) |
| Specific Heat Capacity | 1.026 Jg-¹K-¹ (at 300 K) |
| First Ionization Potential | 8.298 |
| Atomic Volume | 4.60 cm³/mol |
| Atomic Radius | 0.98 Å |
| Covalent Radius | 0.82 Å |
| Synthetic | No |