The ionic compound formed between Fe³⁺ (iron) and Cl⁻ (chlorine) is represented by the formula FeCl3.
The chemical name for this compound is iron(III) chloride.
Explanation:
In this compound, the iron ion has a +3 charge (Fe³⁺), while the chloride ion has a -1 charge (Cl⁻). To balance the charges, three chloride ions are needed for each iron ion. Thus, we require three Cl⁻ ions for every Fe³⁺ ion, leading to the formula FeCl3.
The Roman numeral III in the name iron(III) chloride indicates the oxidation state of the iron ion, which is +3. This way, we can differentiate it from iron(II) chloride, where iron has a +2 oxidation state (FeCl2).