Essential Chemistry for IGCSE - Formulae And Equations (Section 6 - No. 13) | ExamPlay

Essential Chemistry for IGCSE - Formulae And Equations (Section 6 - No. 13)

What is the formula for Iron(III) oxide?

FeO

Fe2O3

Fe3O4

FeO2

Explanation

Iron(III) has a +3 charge, and oxide has a -2 charge, giving the formula Fe2O3.

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