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Al

Aluminium

1326.98
General Information
  • Melting Point: 933 K (660°C)
  • Boiling Point: 2743 K (2470°C)
  • Density: 2.700 g/cm3
  • Type of Substance: Post-Transition Metal
  • Year of Discovery: 1825
Electrons and Ionisation
  • Electron Configuration: [Ne] 3s2 3p1
  • Electrons Per Shell: 2, 8, 3
  • Oxidation States: +3, +2, +1, −1, −2
  • Electronegativity: 1.61
History

The ancient Greeks and Romans used alum in medicine as an astringent, and in dyeing processes. In 1761 de Morveau proposed the name "alumine" for the base in alum. In 1807, Davy proposed the name alumium for the metal, undiscovered at that time, and later agreed to change it to aluminum.

Engineering
  • Resistivity: 28.2  nΩ·m
  • Poisson Ratio: 0.35
  • Magnetism: Paramagnetism
  • Young's Modulus: 70 GPa
  • Shear Modulus: 26 GPa
  • Bulk Modulus: 76 GPa
  • Mohs Hardness: 3
  • Vickers Hardness: 160 - 350 MPa
  • Brinell Hardness: 160 - 550 MPa
  • Thermal Expansion: 23.1×10-6 K-1
  • Thermal Conductivity: 237 W/m·K