Name the following substances
KCl
FeCl2
CuSO4
Al2O3
Fe2O3

Potassium chloride

Iron (II) chloride

Copper (II) sulfate

Aluminum oxide

Iron (III) oxide

Remember to put roman numerals for the compounds where the metal has more than one possible oxidation state. For example, you see iron here with a +2 charge in one compound and then +3 charge in another. If the metal only has one possible oxidation state (like potassium and aluminum), you don't need a roman numeral.

i'm assuming that the correct answer is indeed the first one/ "a"..