| Property | Value |
|---|---|
| Atomic number | 3 |
| Atomic weight | 6.9412 amu |
| Element family | Alkali metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 6Li: 7.5%, 7Li: 92.5% |
| Previous element | Helium |
| Next element | Beryllium |
| Density | 0.534 g/cm3 (STP) |
| Melting | 180.7 °C |
| Boiling | 1317 °C |
| Covalent radius | 1.33 Å |
| Van der Waals radius | 1.82 Å |
| Ionic radius | 0.76 Å |
| Metallic radius | 1.52 Å |
| First ionization potential | 5.391 eV |
| Electron affinity | 0.618 eV |
| Electronegativity | 0.98 |
| Discovery year | 1817 |
Lithium is an element number 3 from alkali metals family. Its symbol is Li. Lithium atomic weight is 6.9412 amu. Li stable and long lived isotopes are 6Li: 7.5%, 7Li: 92.5%. Lithium electronic configuration is 1s22s1. Sample compounds that contain Lithium are LiOH, LiCl, Li2CO3, Li3PO4, Li2SO4, LiBr.
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