Beryllium vs Magnesium
Pick up to 3 elements and see how they stack up.
| Property | Beryllium | Magnesium |
|---|---|---|
| Atomic number | 4 | 12 |
| Atomic mass | 9.0122 | 24.305 |
| Electronegativity | 1.57 | 1.31 |
| Melting point | 1,560 K (1,286.8 °C) | 923 K (649.8 °C) |
| Boiling point | 2,742 K (2,468.8 °C) | 1,363 K (1,089.8 °C) |
| Density | 1.85 g/cm³ | 1.738 g/cm³ |
| Atomic radius | 153 pm | 173 pm |
| Ionization energy | 9.323 eV | 7.646 eV |
| Discovered | 1798 | 1755 |
| Category | Alkaline earth metal | Alkaline earth metal |
| State at room temp. | Solid | Solid |
| Block | s | s |
| Group | 2 | 2 |
| Period | 2 | 3 |
| Valence electrons | 2 | 2 |
| Common charges | +2 | +2 |
| Electron configuration | [He] 2s2 | [Ne] 3s2 |