Europium
From Wikipedia, the free encyclopedia
Europium es un elemento chimic de symbolo Sm e numero atomic 63.
Samarium ← Europium → Gadolinium | |
Apparentia | |
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argentee blanc | |
Proprietates atomic | |
Nomine, symbolo, numero | Europium, Eu, 63 |
Serie chimic | lanthanido |
Gruppo, periodo, bloco | 3, 6, f |
Configuration electronic | [Xe] 6s2 4f7 |
Electronegativitate | 1,2? |
Proprietates physic | |
Stato | solido |
Massa molar | 151,964 g·mol-1 |
Densitate | 5,264 g·cm-3 |
Densitate liquide al p.f. | 5,13 g·cm-3 |
Puncto de fusion | 1099 K, 826 °C, 1519 °F |
Puncto de ebullition | 1802 K, 1529 °C, 2784 °F |
Calor de fusion | 9,21 kJ·mol-1 |
Calor de vaporisation | 176 kJ·mol-1 |
Calor specific | 27,66 J·mol-1·K-1 |
Resistivitate electric | (t.a.) (poly) 900 nΩ·m |
Conductivitate thermal | est. 13,9 W·m-1·K-1 |
Expansion thermal | (t.a.) (poly) 35,0 µm·m-1·K-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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