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Aluminum (Aluminium)
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Al | 13 | 26.9815386 | 660.32 °C | 2519 °C | Solid | 2.70 g/cm3 | Metal  |
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| General |
| Name, symbol, number |
aluminium, Al, 13 |
| Chemical series |
poor metals |
| Group, period, block |
13, 3, p |
| Appearance |
gray
 |
| Standard atomic weight |
26.9815386123499036(8) g·mol−1 |
| Electron configuration |
[Ne] 3s2 3p1 |
| Electrons per shell |
2, 8, 3 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
2.70 g·cm−3 |
| Liquid density at m.p. |
2.375 g·cm−3 |
| Melting point |
933.47 K
(660.32 °C, 1220.58 °F) |
| Boiling point |
2792 K
(2519 °C, 4566 °F) |
| Heat of fusion |
10.71 kJ·mol−1 |
| Heat of vaporization |
294.0 kJ·mol−1 |
| Heat capacity |
(25 °C) 24.200 J·mol−1·K−1 |
Vapor pressure
| P/Pa |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T/K |
1482 |
1632 |
1817 |
2054 |
2364 |
2790 |
|
| Atomic properties |
| Crystal structure |
face centered cubic
0.4032 nm |
| Oxidation states |
3
(amphoteric oxide) |
| Electronegativity |
1.61 (Pauling scale) |
Ionization energies
(more) |
1st: 577.5 kJ·mol−1 |
| 2nd: 1816.7 kJ·mol−1 |
| 3rd: 2744.8 kJ·mol−1 |
| Atomic radius |
125 pm |
| Atomic radius (calc.) |
118 pm |
| Covalent radius |
118 pm |
| Miscellaneous |
| Magnetic ordering |
paramagnetic |
| Electrical resistivity |
(20 °C) 26.50 nΩ·m |
| Thermal conductivity |
(300 K) 237 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 23.1 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(r.t.) (rolled) 5000 m·s−1 |
| Young's modulus |
70 GPa |
| Shear modulus |
26 GPa |
| Bulk modulus |
76 GPa |
| Poisson ratio |
0.35 |
| Mohs hardness |
2.75 |
| Vickers hardness |
167 MPa |
| Brinell hardness |
245 MPa |
| CAS registry number |
7429-90-5 |
| Selected isotopes |
|
|
| References |
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Aluminium Compounds & Alloys
Aluminum acetate
Aluminum alloys
Aluminum antimonide
Aluminum arsenide
Aluminum bromide
Aluminum bromide hexahydrate
Aluminum carbide
Aluminum chloride
Aluminum chloride hexahydrate
Aluminum chlorohydrate
Aluminum diboride
Aluminum dodecaboride
Aluminum fluoride
Aluminum gallium arsenide
Aluminum gallium indium phosphide
Aluminum gallium nitride
Aluminum gallium phosphide
Aluminum hydride
Aluminum hydroxide
Aluminum indium arsenide
Aluminum iodide
Aluminum isopropoxide
Aluminum monofluoride
Aluminum monostearate
Aluminum monoxide
Aluminum nitrate
Aluminum nitride
Aluminum oxide
Aluminum oxide hydroxide
Aluminum oxynitride
Aluminum phosphate
Aluminum phosphide
Aluminum selenide
Aluminum silicate
Aluminum sulfate
Aluminum sulfide
Aluminum telluride
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Source: Wikipedia article Aluminum
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Chemistry Quick Facts
