Chromo
Apparentia
Iste articulo concerne le elemento chimic. Pro altere usos, vide Chromo (disambiguation).
Vanadium ← Chromo → Manganese | |
Apparentia | |
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argentee metallic | |
Proprietates atomic | |
Nomine, symbolo, numero | Chromo, Cr, 24 |
Serie chimic | metallo de transition |
Gruppo, periodo, bloco | 6, 4, d |
Configuration electronic | [Ar] 4s1 3d5 |
Electronegativitate | 1,66 |
Proprietates physic | |
Stato | solido |
Massa molar | 51,9961(6) g·mol−1 |
Densitate | 7,19 g·cm−3 |
Densitate liquide al p.f. | 6,3 g·cm−3 |
Puncto de fusion | 2180 K, 1907 °C, 3465 °F |
Puncto de ebullition | 2944 K, 2671 °C, 4840 °F |
Calor de fusion | 21,0 kJ·mol−1 |
Calor de vaporisation | 339,5 kJ·mol−1 |
Calor specific | 23,35 J·mol−1·K−1 |
Resistivitate electric | (20 °C) 125 nΩ·m |
Conductivitate thermal | 93,9 W·m−1·K−1 |
Velocitate de sono | (20 °C) 5940 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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Chromo es un elemento chimic de symbolo Cr e numero atomic 24. Illo es appreciate pro usos decorative a causa de su alte lustre.