Aluminium

Aluminium or aluminum is a chemical element; it has symbol Al and atomic number 13. It has a density lower than other common metals, about one-third that of steel.... Wikipedia

• Name, symbol:  aluminium, Al
• Pronunciation:  -ew -ee-əm]] -mi-nəm]]
• Alternative name:  aluminum (US)
• Appearance:  silvery gray metallic
• Oxidation states:  +3, +2, Aluminium monoxide +1 Aluminium iodide, −1, −2 ​(an amphoteric oxide)
• Electronegativity:  Pauling scale: 1.61
• energies:  1st: 577.5 kJ/mol, 2nd: 1816.7 kJ/mol, 3rd: 2744.8 kJ/mol, (more)
• Atomic radius:  empirical: 143 pm
• Covalent radius:  121±4 pm
• Van der Waals radius:  184 pm
• Crystal structure:  ​face-centered cubic
• Thermal expansion:  23.1 µm/(m·K) (at 25 °C)
• Thermal conductivity:  237 W/(m·K)
• Electrical resistivity:  28.2 nΩ·m (at 20 °C)
• Magnetic ordering:  paramagnetic
• Young's modulus:  70 GPa
• Shear modulus:  26 GPa
• Bulk modulus:  76 GPa
• Poisson ratio:  0.35
• Mohs hardness:  2.75
• Vickers hardness:  160–350 MPa
• Brinell hardness:  160–550 MPa
• CAS Number:  7429-90-5
• Prediction:  Antoine Lavoisier (1787)
• First isolation:  Hans Christian Ørsted (1825)
• Namedby:  Humphry Davy (1807)
• Data source:  DuckDuckGo