Common Magnesium Compounds:
MgF2- Magnesium Fluoride
MgCl2- Magnesium Chloride
MgBr2- Magnesium Bromide
MgI2- Magnesium Iodide
MgH2- Magnesium Hydride
MgO- Magnesium Oxide
MgO2- Magnesium Peroxide
MgS- Magnesium Sulphide
MgSe- Magnesium Selenide
MgTe- Magnesium Telluride
Mg3N2- Magnesium Nitride
http://www.webelements.com/webelements/elements/text/Mg/key.html
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