* Manganese(III) tells us the manganese ion has a +3 charge (Mn³⁺).
* Sulfate is the polyatomic ion SO₄²⁻.
To balance the charges, we need two Mn³⁺ ions (2 x +3 = +6) and three SO₄²⁻ ions (3 x -2 = -6).
Therefore, the formula for manganese(III) sulfate is Mn₂(SO₄)₃.
