Lithium vs Fluorine
| Property | Li Lithium | F Fluorine |
|---|---|---|
| Atomic number | 3 | 9 |
| Symbol | Li | F |
| Name | Lithium | Fluorine |
| Category | alkali-metal | halogen |
| Standard Atomic Weight | 6.9675 u | 18.998403 u |
| Period | 2 | 2 |
| Group | 1 | 17 |
| Block | s | p |
| Phase at STP | solid | gas |
| Electron configuration | [He]2s1 | [He]2s22p5 |
| Oxidation states | [1] | -1 |
| Electronegativity (Pauling) | 0.98 | 3.98 |
| Electron affinity | 0.61804 eV | 3.4011 eV |
| Density | 534 kg/m³ | 1.696 kg/m³ |
| Melting point | 180.5 °C | -219.62 °C |
| Boiling point | 1341.85 °C | -188.12 °C |
| Discovery year | 1817 | 1886 |