Relative atomic mass: 26.9815386 +- 0.0000008

English: Aluminium
French: Aluminium
Croatian: Aluminij
German: Aluminium
Italian: Alluminio
Spanish: Aluminio

Atomic number: 13
Group numbers: 13
Period: 3
Standard state (20 oC): solid

Discovery: 1825 Hans Christian Orsted (DK)
Aluminium was discovered by Hans Christian Orsted (DK) in 1825. The origin of the name comes from the Latin word alumen meaning alum. It is a soft, lightweight, silvery-white metal. Exposed surfaces quickly form protective oxide coating. It reacts violently with oxidants. Aluminium is third most abundant element in the earth's crust. Aluminium is the most abundant metal to be found in the earth's crust, but is never found free in nature. Aluminium is obtained by electrolysis from bauxite. Aluminium used for many purposes from airplanes to beverage cans. It is too soft in its pure form so less than 1 % of silicon or iron is added, which hardens and strengthens it. The price of 99.9 % pure aluminium granules is 45.70 for 1000 g.
Electronic configuration: [Ne] 3s2 3p1
Formal oxidation number: +3
Atomic radius: 143.2 pm

Electronegativities: 1.61
Thermal conductivity: 237 W/(m K)
Electrical resistivity (20 oC): 2.65 microOhm cm

Melting point: 660.32 oC
Boiling point: 2519 oC

Heat of fusion: 10.67 kJ/mol
Heat of vaporization: 290.8 kJ/mol
Heat of atomization: 324.01 kJ/mol

12Mg <= 13Al => 14Si

ASCII Periodic Table of the Elements
6 Jan. 2020
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