Home 12 Mg Magnesium back to the periodic table
 
Atomic number   12
Symbol   Mg
Atomic weight   24.3050
Density [g/cm3]   1.74
Melting point [°C]   648.8
Boiling point [°C]   1107
1st Ionization energy [eV]   7.646
Electronic configuration   [Ne] 3s2
Oxidation number (most stable)   2
Atomic radius [pm]   160
Ionic radius [pm]   72 (2+)
Abundance in crustal rocks [ppm]   27640
Origin of the name   from the Greek  Magnesia, a district of Thessaly
Discovery   1808 by the English scientist Humphry Davy
Uses   as light alloy as well as in alloys (with aluminium), beyond that for inoculating cast irons with nodular cast iron, additionally pyrotechnic application.
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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