Electronic data		Thermal data		Steric data
Shells: 2,8,3 Orbitals: [Ne] 3s2 3p1 Electronegativity: 1.5, 1.5 1. Ionization potential: 5.9858 eV 2. Ionization potential: 18.828 eV 3. Ionization potential: 28.447 eV Oxidation states: 3 Electrical conductivity: 0.377 10^6		Melting point: 660.37 °C Boiling point: 2519 °C Specific heat: 0.90 J/gK Heat of fusion: 10.790 kJ/mol Heat of vaporization: 293.40 kJ/mol Thermal conductivity: 2.37 W/cmK		Atomic radius: 1.82 Å Ionic radius: 0.54 Å () Covalent radius: 1.18 Å Atomic volume: 10.0 cm³/mol Density (293 K): 2.702 g/cm³ Crystal structure: Cubic: Face centered

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
26Al	0	25.9868	5	7.3E05y	+,EC	View
27Al	100	26.9815	5/2	--	stable	--
28Al	0	28	3	2.25m	-	View

Legend

Name origin:	Latin: alumen, aluminis, (alum)
Description:	Soft, lightweight, silvery-white metal. Third most abundant element in the earth's crust.
Discovered by:	Hans Christian Oersted
Year:	1825
Place:	Denmark
Sources:	Never occurs in free form. Obtained by electrolysis from bauxite (Al2O3).
Use(s):	Used for many purposes from airplanes to beverage cans. Too soft in its pure form so less than 1% of silicon or iron is added, which hardens and strengthens it.