Lithium vs Neon
| Property | Li Lithium | Ne Neon |
|---|---|---|
| Atomic number | 3 | 10 |
| Symbol | Li | Ne |
| Name | Lithium | Neon |
| Category | alkali-metal | noble-gas |
| Standard Atomic Weight | 6.9675 u | 20.1797 u |
| Period | 2 | 2 |
| Group | 1 | 18 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [He]2s1 | [He]2s22p6 |
| Oxidation states | [1] | [0] |
| Electronegativity (Pauling) | 0.98 | N/A |
| Electron affinity | 0.61804 eV | -1.2 eV |
| Density | 534 kg/m³ | 0.8999 kg/m³ |
| Melting point | 180.5 °C | -248.59 °C |
| Boiling point | 1341.85 °C | -246.05 °C |
| Discovery year | 1817 | 1898 |