Praseodymium
Praseodymium es un elemento chimic de symbolo Pr e numero atomic 59.
| Cerium ← Praseodymium → Neodymium | |
| Apparentia | |
 | |
| grisesc blanc | |
| Proprietates atomic | |
| Nomine, symbolo, numero | Praseodymium, Pr, 59 |
| Serie chimic | lanthanido |
| Gruppo, periodo, bloco | 3, 6, f |
| Configuration electronic | [Xe] 6s2 4f3 |
| Electronegativitate | 1,13 |
| Proprietates physic | |
| Stato | solido |
| Massa molar | 140,90765 g·mol-1 |
| Densitate | 6,77 g·cm-3 |
| Densitate liquide al p.f. | 6,50 g·cm-3 |
| Puncto de fusion | 1208 K, 935 °C, 1715 °F |
| Puncto de ebullition | 3793 K, 3520 °C, 6368 °F |
| Calor de fusion | 6,89 kJ·mol-1 |
| Calor de vaporisation | 331 kJ·mol-1 |
| Calor specific | 27,20 J·mol-1·K-1 |
| Resistivitate electric | (t.a.) (α, poly) 700 nΩ·m |
| Conductivitate thermal | 12,5 W·m-1·K-1 |
| Expansion thermal | (t.a.) (α, poly) 6,7 µm·m-1·K-1 |
| Velocitate de sono | (20 °C) 2280 m·s−1 |
| Valores in unitates SI e in le conditiones normal del material (25 °C, 100 kPa) si non indica al contrario. | |
Pecietta de chimia
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