| General |
|---|
| Name | Sodium | | Symbol | Na | | Number | 11 | | Chemical series | Alkali metals | | Group / Period | 1 / 3 | | Block | s-block | | CAS registry number | 7440-23-5 |
| Physical properties |
|---|
| State | solid | | Density | 0.968 g/cm3 | | Melting point | 370.87 K (97.72 °C, 207.9 °F) | | Boiling point | 1156 K (883°C, 1621°F) | | Critical point | 2573 K, 35 MPa |
| Atomic properties |
|---|
| Atomic Weight | 22.98976928 g/mol | | Crystal structure | cubic body centered | | Electronegativity | 0.93 | | Atomic radius | 180 pm | | Atomic radius (calculated) | 190 pm | | Electron configuration | [Ne] 3s1 | | Electrons per shell | 2, 8, 1 | | Number of protons | 11 | | Number of neutrons | 12 |
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Magnesium