The chemical formula for magnesium sulfate is MgSO₄ with oxidation number of Magnesium as +2.
In magnesium sulfate, the oxidation number of magnesium is +2.
The correct chemical formula for magnesium sulfate can be identified by calculating the oxidation number of magnesium in the various magnesium compound with oxygen.
MgSO₃ = x + 5 +3(-2) = 0
x + 5 - 6 = 0
x -1 = 0
x = + 1
MgSO₄ = x + 6 + 4(-2) = 0
x + 6 -8 = 0
x - 2 = 0
x = +2
Thus, the chemical formula for magnesium sulfate is MgSO₄ with oxidation number of Magnesium as +2.
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