Barium
Barium es un elemento chimic de symbolo Ba e numero atomic 56.
| Cesium ← Barium → Lanthano | |
| Apparentia | |
 | |
| argentee gris | |
| Proprietates atomic | |
| Nomine, symbolo, numero | Barium, Ba, 56 |
| Serie chimic | metallo alcalin terrose |
| Gruppo, periodo, bloco | 2, 6, s |
| Configuration electronic | [Xe] 6s2 |
| Electronegativitate | 0,89 |
| Proprietates physic | |
| Stato | solido |
| Massa molar | 137,33 g·mol-1 |
| Densitate | 3,51 g·cm-3 |
| Densitate liquide al p.f. | 3,338 g·cm-3 |
| Puncto de fusion | 1000 K, 727 °C, 1341 °F |
| Puncto de ebullition | 2170 K, 1897 °C, 3447 °F |
| Calor de fusion | 7,12 kJ·mol-1 |
| Calor de vaporisation | 140,3 kJ·mol-1 |
| Calor specific | 28,07 J·mol-1·K-1 |
| Resistivitate electric | (20 °C) 332 nΩ·m |
| Conductivitate thermal | 18,4 W·m-1·K-1 |
| Expansion thermal | (25 °C) 20,6 µm·m−1·K−1 |
| Velocitate de sono | (20 °C) 1620 m·s−1 |
| Valores in unitates SI e in le conditiones normal del material (25 °C, 100 kPa) si non indica al contrario. | |
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