What is the correct chemical formula for iron(III) sulfate?

The correct answer to this question is Fe2(SO4)3 which is the chemical formula. The IUPAC name is iron(III) sulfate, which is determined by the set of rules that provide compounds with their name developed by the International Union of Pure and Applied Chemistry. Fe2(SO4)3 is the formula for this chemical compound.

To determine this: the 3 sulfate ions have a charge of -6 as -2 is multiplied by 3. Thus, to neutralize a -6 charge, a +6 charge is required. Each iron ion has a +3 charge, as 6/2 =3. This is how we derive the name Iron(III) sulfate.