| Property | Value |
|---|---|
| Atoomnummer | 4 |
| Atoomgewicht | 9.0121823 amu |
| Element family | Aardalkalimetalen |
| Elektronische configuratie | 1s2 |
| Stable and very long lived isotopes | 9Be: 100% |
| Previous element | Lithium |
| Next element | Borium |
| Dichtheid | 1.85 g/cm3 (STP) |
| Smelten | 1278 °C |
| Kookpunt | 2970 °C |
| Covalente straal | 1.02 Å |
| Van der Waals straal | 1.53 Å |
| Ionstraal | 0.35 Å |
| Metalic radius | 1.12 Å |
| Eerst ionisatiepotentiaal | 9.322 eV |
| Elektronenaffiniteit | -0.500 eV |
| Electronegativity | 1.57 |
| Discovery year | 1798 |
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