Cobalt es un elemento chimic de symbolo Co e numero atomic 27.
Ferro ← Cobalt → Nickel | |
Apparentia | |
metallo dur lustre gris | |
Proprietates atomic | |
Nomine, symbolo, numero | Cobalt, Co, 27 |
Serie chimic | metallo de transition |
Gruppo, periodo, bloco | 9, 4, d |
Configuration electronic | [Ar] 4s2 3d7 |
Electronegativitate | 1,88 |
Proprietates physic | |
Stato | solido |
Massa molar | 58,933195(5) g·mol−1 |
Densitate | 8,90 g·cm−3 |
Densitate liquide al p.f. | 7,75 g·cm−3 |
Puncto de fusion | 1768 K, 1495 °C, 2723 °F |
Puncto de ebullition | 3200 K, 2927 °C, 5301 °F |
Calor de fusion | 16,06 kJ·mol−1 |
Calor de vaporisation | 377 kJ·mol−1 |
Calor specific | 24,81 J·mol−1·K−1 |
Resistivitate electric | (20 °C) 62,4 nΩ·m |
Conductivitate thermal | 100 W·m−1·K−1 |
Expansion thermal | (25 °C) 13,0 µm·m−1·K−1 |
Velocitate de sono | (20 °C) 4720 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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