| General |
|---|
| Name | Lithium | | Symbol | Li | | Number | 3 | | Chemical series | Alkali metals | | Group / Period | 1 / 2 | | Block | s-block | | CAS registry number | 7439-93-2 |
| Physical properties |
|---|
| State | solid | | Density | 0.534 g/cm3 | | Melting point | 453.69 K (180.54 °C, 356.97 °F) | | Boiling point | 1615 K (1342 °C, 2448 °F) | | Critical point | 3223 K, 67 MPa |
| Atomic properties |
|---|
| Atomic Weight | 6.941 g/mol | | Crystal structure | hexagonal | | Electronegativity | 0.98 | | Atomic radius | 145 pm | | Atomic radius (calculated) | 167 pm | | Electron configuration | [He] 2s1 | | Electrons per shell | 2, 1 | | Number of protons | 3 | | Number of neutrons | 4 |
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Beryllium