Lithium |
| Symbol | Li |
|---|---|
| Latin name | Lithium |
| Atomic number | 3 |
| Period | 2 |
| Element category | Alkali metals |
| Relative atomic mass | 6.941 |
| Group | I.A |
| Electronegativity | 1.0 |
| Oxidation numbers | 1 |
| Electron configuration | 1s2 2s1 |
| Density [g/cm3] | 0.534 |
| State | Solid |
| Melting point [°C] | 180.54 |
| Boiling point [°C] | 1347 |
| Critical point [°C] | 2950 |
| Critical pressure [MPa] | 67 |
| Atomic radius [pm] | 167 |
| Covalent radius [pm] | 134 |
| Thermal conductivity [W m-1K-1] | 84.7 |
| Heat capacity [J K-1g-1] | 3.582 |
| Discovery | 1870 |
| Hardness [Mohs scale] | 0.6 |
| Young's modulus [GPa] | 4.9 |
| Electrical conductivity [S m-1] | 1.17 · 107 |
| Shear modulus [GPa] | 4.2 |
| Stable isotopes | 2 |
| Unstable isotopes | 2 |