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What is magnesium sulfite?

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Quick Answer

Magnesium sulfite is an ionic compound composed of one positively charged magnesium ion and one negatively charged sulfite ion. The chemical formula of magnesium sulfite is MgSO3.

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Full Answer

The magnesium ion in magnesium sulfite has a positive charge of 2. The sulfite ion consists of one sulphur atom covalently bonded to three oxygen atoms, two of which carry a charge of -1, which gives an overall charge of -2 to the sulfite ion. An ionic bond exists between the positively charged magnesium ion and the negatively charged sulfite ion. Magnesium sulfite commonly exists in a hydrated form, in which it weakly bonds with water molecules.

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