Relative atomic mass: 24.3050 +- 0.0006

English: Magnesium
French: Magnesium
Croatian: Magnezij
German: Magnesium
Italian: Magnesio
Spanish: Magnesio

Atomic number: 12
Group numbers: 2
Period: 3
Standard state (20 oC): solid

Discovery: 1808 Sir Humphry Davy (GB)
Magnesium was discovered by Sir Humphry Davy (GB) in 1808. The origin of the name comes from the Greek word Magnesia, a district of Thessaly. It is a lightweight, malleable, silvery-white metal that burns in air with a brilliant white flame and reacts with water as temperature elevates. It can ignite in air and it reacts violently with oxidants. Magnesium is found in large deposits in the form of magnesite, dolomite and other minerals. It is usually obtained by electrolysis of melted magnesium chloride (MgCl2) derived from brines, wells and sea water. Magnesium is used in alloys to make airplanes, missiles and other uses for light metals. It has structural properties similar to aluminium. The price of 99.8 % pure magnesium granules is 111.60 for 1000 g.
Electronic configuration: [Ne] 3s2
Formal oxidation number: +2
Atomic radius: 159.9 pm

Electronegativities: 1.31
Thermal conductivity: 156 W/(m K)
Electrical resistivity (20 oC): 4.45 microOhm cm

Melting point: 650 oC
Boiling point: 1090 oC

Heat of fusion: 9.04 kJ/mol
Heat of vaporization: 127.6 kJ/mol
Heat of atomization: 146.499 kJ/mol

11Na <= 12Mg => 13Al

ASCII Periodic Table of the Elements
6 Jan. 2020
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