What is aluminium

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Aluminium is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has a great affinity towards oxygen, and forms a protective layer of oxide on the surface when exposed to air. 

Aluminium is a metal found in group 3 of the periodic table.

It is a solid, nonmagnetic, non-lustrous, silvery-white with a bluish tint metal.

Atomic number: 13

Atomic mass: 27 (rounded)

Melting point: 660.3 °C

Density: 2.7 g/cm^3

Electron configuration: [Ne] 3s^2 3p^1

SHC: 0.89 J/g °C

Mass of one mole = 27 g (rounded)