Details : Item 215
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Alkali metals |  |  |  |  |  |  | |||||
| Alkaline earth metal |  |  |  |  |  |  | |||||
| Transition metals I |  |  |  |  |  |  | |||||
| Transition metals II |  |  |  |  |  |  | |||||
| Transition metals III |  |  |  |  |  |  | |||||
| Transition metals IV |  |  |  |  |  |  | |||||
| Post-transition metal |  |  |  |  | | | |||||
| Metalloid | | | | | | | |||||
| Diatomic non-metal | | | | | | | |||||
| Noble gas | | | | | | | |||||
| Other | | | | | | | |||||
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| Famille : Alkali metals/2 |
|---|
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| Sodium |
| Symbol: Na, phase:solid, silvery white metallic Used in soap manufacture. Sodium chloride (edible salt) is a de-icing agent and a nutrient for humans and cattle |
| Properties | |
|---|---|
| Atomic number | 11 |
| Atomic weight | 22.9898 |
| Melting point (K) | 370.944 |
| Boiling point (K) | 1156.090 |
| Speed of sound (m/s) | 3200 |
| Discovery | 1807 (H. Davy) |