Beryllium vs Neon
| Property | Be Beryllium | Ne Neon |
|---|---|---|
| Atomic number | 4 | 10 |
| Symbol | Be | Ne |
| Name | Beryllium | Neon |
| Category | alkaline-earth-metal | noble-gas |
| Standard Atomic Weight | 9.012183 u | 20.1797 u |
| Period | 2 | 2 |
| Group | 2 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [He]2s2 | [He]2s22p6 |
| Oxidation states | [0, 1, 2] | [0] |
| Electronegativity (Pauling) | 1.57 | N/A |
| Electron affinity | -0.52 eV | -1.2 eV |
| Density | 1850 kg/m³ | 0.8999 kg/m³ |
| Melting point | 1286.85 °C | -248.59 °C |
| Boiling point | 2470.85 °C | -246.05 °C |
| Discovery year | 1797 | 1898 |