Lithium
Apparentia
Helium ← Lithium → Beryllium | |
Apparentia | |
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argentee-blanc (exponite flottar in oleo) | |
Proprietates atomic | |
Nomine, symbolo, numero | Lithium, Li, 3 |
Serie chimic | metallo alcalin |
Gruppo, periodo, bloco | 1, 2, s |
Configuration electronic | [He] 2s1 |
Electronegativitate | 0,98 |
Proprietates physic | |
Stato | solido |
Massa molar | 6,941(2) g·mol−1 |
Densitate | 0,534 g·cm−3 |
Densitate liquide al p.f. | 0,512 g·cm−3 |
Puncto de fusion | 453,69 K, 180,54 °C, 356.97 °F |
Puncto de ebullition | 1615 K, 1342 °C, 2448 °F |
Puncto critic | 3223 K, 67 MPa (extrapolava) |
Calor de fusion | 3,00 kJ·mol−1 |
Calor de vaporisation | 147,1 kJ·mol−1 |
Calor specific | 24,860 J·mol−1·K−1 |
Resistivitate electric | (20 °C) 92,8 nΩ·m |
Conductivitate thermal | 84,8 W·m−1·K−1 |
Expansion thermal | (25 °C) 46 µm·m−1·K−1 |
Velocitate de sono | (20 °C) 6000 m/s |
Riscos | |
NFPA 704 | |
Valores in unitates SI e in le conditiones normal del material (25 °C, 100 kPa) si non indica al contrario. | |
Lithium es un elemento chimic de numero atomic 3. Illo ha un color argentee, es le metallo le plus leve, e como omne metallos alcalin es multo reactive. Le usos principal de lithium es in ceramicas, pilas, e lubrificantes.
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