Zinc
Zinc (del german zink) es un elemento chimic de symbolo Zn e numero atomic 30.
Illo es le prime elemento in gruppo 12 del tabella periodic. Zinc es, in alicun respectos, similar chimicamente a magnesium, proque su ion ha similar dimension e su solmente commun stato de oxydation es +2. Zinc es le 24te plus abundante elemento in le crusta del Terra e ha cinque stabile isotopos. Le plus exploitate mineral de zinc es sphalerite, un sulfido de zinc. Le plus grande exploitabile depositos es trovate in Australia, Asia, e le Statos Unite.
| Cupro ← Zinc → Gallium | |
| Apparentia | |
 | |
| argentee-gris | |
| Proprietates atomic | |
| Nomine, symbolo, numero | Zinc, Zn, 30 |
| Serie chimic | metallo de transition |
| Gruppo, periodo, bloco | 12, 4, d |
| Configuration electronic | [Ar] 4s2 3d10 |
| Electronegativitate | 1,65 |
| Proprietates physic | |
| Stato | solido |
| Massa molar | 65,38 g·mol-1 |
| Densitate | 7,14 g/cm3 |
| Densitate liquide al p.f. | 6,57 g/cm3 |
| Puncto de fusion | 692,68 K, 419,53 °C, 787.15 °F |
| Puncto de ebullition | 1180 K, 907 °C, 1665 °F |
| Calor de fusion | 7,32 kJ·mol-1 |
| Calor de vaporisation | 123,6 kJ·mol-1 |
| Calor specific | 25,470 J·mol-1·K-1 |
| Resistivitate electric | (20 °C) 59,0 nΩ·m |
| Conductivitate thermal | 116 W·m-1·K-1 |
| Expansion thermal | (25 °C) 30,2 µm·m−1·K−1 |
| Velocitate de sono | (t.a.) 3850 m·s−1 |
| Valores in unitates SI e in le conditiones normal del material (25 °C, 100 kPa) si non indica al contrario. | |
Vide etiam
Referentias
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