Answer :
The formula of magnesium sulfide is MgS, formula of magnesium sulfite is MgSO₃, formula of magnesium sulfate is MgSO₄.
What is Compounds ?
The substance that formed chemically bonding two or more different chemical elements is called Compounds.
What is Molecular Formula ?
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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