Write chemical formulas for compounds containing multivalent charges.?

In Chem, we write chemical formulas for the elements following: 1) Iron (III) Oxide 2) Tin (II) Chloride 3) Copper (II) Carbide 4) Lead (IV) sulfide Please also explain how to obtain response instead of just giving me the answer because I need to know how to get from the compound name, the stock Please chemical formula

Iron (3) O (-2) Fe2O3 (index 2 and 3) FeO 3 -2 (crosses 2 and 3) Try to do the rest yourself

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