The formula of magnesium sulfide is MgS, formula of magnesium sulfite is MgSO₃, formula of magnesium sulfate is MgSO₄.
The substance that formed chemically bonding two or more different chemical elements is called Compounds.
The chemical formula that gives total number of atoms of each element in one molecule of a compound is called Molecular Formula.
Magnesium sulfide contains two ions Mg⁺² and S²⁻. The formula of magnesium sulfide is MgS.
Magnesium sulfite contains two ions Mg⁺² and SO₃⁻². The formula of magnesium sulfite is MgSO₃.
Magnesium sulfate contains two ions Mg⁺² and SO₄⁻². The formula of magnesium sulfate is MgSO₄.
Thus from the above conclusion we can say that the formula of magnesium sulfide is MgS, formula of magnesium sulfite is MgSO₃, formula of magnesium sulfate is MgSO₄.
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