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What was the ratio in the formula for Iron (II) oxide?

What was the ratio in the formula for Iron (III) oxide?

Respuesta :

Iron (II) oxide  FeO      Fe : O = 1 : 1

Iron (III) oxide  Fe₂O₃   Fe : O = 2 : 3

on edgeunity its Fe:1, O:1 and Fe:2, O:3