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Magnesium compounds

Magnesium compounds are really important and often used in many ways. Some binary compounds are magnesium with halogens, with oxygen, hydrogen and others. In compounds of magnesium (where known), the most common oxidation numbers of magnesium are:

Hydrides       MgH₂ - magnesium (II) hydride
Fluorides       MgF₂ - magnesium (II) fluoride
Chlorides      MgCl₂ - magnesium (II) chloride
Bromides      MgBr₂ 6H₂O - magnesium (II) bromide 6-water
                    MgBr₂ - magnesium (II) bromide
Iodides         MgI₂ - magnesium (II) iodide
Oxides          MgO - magnesium (II) oxide
                    MgO₂ - magnesium (II) peroxide
Sulfides        MgS - magnesium (II) sulphide
Selenides      MgSe - magnesium (II) selenide
Tellurides      MgTe - magnesium (II) telluride
Nitrides         Mg₃N₂ - magnesium (II) nitride

Other magnesium compounds include magnesium carbonate (MgCO₃) and magnesium fluoride (MgF₂). Magnesium carbonate is used to make some types of paints and inks and is added to table salt to prevent caking. A thin film of magnesium fluoride is applied to optical lenses to help reduce glare and reflections.

Source en.wikipedia.org

What is magnesium?

Green vegetables such as spinach provide magnesium because the center of the chlorophyll molecule contains magnesium. Nuts (especially cashews and almonds), seeds, and some whole grains are also good sources of magnesium.

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Notable features

Magnesium is a fairly strong, silvery-white, light-weight metal. It is protected by a thin layer of oxide which is fairly impermeable and hard to remove. Magnesium reacts with water at room temperature, though it reacts much more slowly (for example) than calcium.

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