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Aluminum (Al)
Atomic number 13 · post
| Atomic number | 13 |
|---|---|
| Atomic mass | 26.98154 u |
| Molar mass | 26.98154 g/mol |
| Category | post |
| Group / period / block | 13 / 3 / p |
| Electron configuration | [Ne] 3s2 3p |
| Electrons per shell | 2, 8, 3 |
| Electronegativity (Pauling) | 1.61 |
| Atomic radius | 125.0 pm |
| Density | 2.7 g/cm³ |
| First ionisation energy | 5.9858 eV |
| Melting point | 933.47 K (660.32 °C) |
| Boiling point | 2792.15 K (2519.00 °C) |
| Common oxidation states | +3 |
| Abundance in Earth's crust | 82300 ppm |
Uses
Cans, foil, aircraft, power lines
Discovery
1825, Hans Christian Oersted