Birimba, №321, B.P40 Rumonge Burundi
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Burundi
| Symbol | Be |
| Atomic Number | 4 |
| Atomic Weight | 9.0122 g/mol |
| Density | 1.848 g/cm³ |
| Melting Point | 1,278 °C (2,352 °F) |
| Boiling Point | 2,470 °C (4,478 °F) |
| Crystal Structure | Hexagonal (close-packed) |
| Color | Steel gray |
| Hardness | 5.5 (Mohs scale) |
| Electrical Conductivity | 29.8 x 10⁶ S/m (at 20°C) |
| Thermal Conductivity | 200 W/m·K |
| Young's Modulus | 287 GPa |
| Thermal Expansion | 11.5 µm/m·K |
| Specific Heat | 1.825 J/g·K |
| Refractive Index | 1.56 |
| Appearance | Shiny, brittle metal |