Magnetite has the formula

CHEMISTRY · Single correct · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

\text{Fe}_3\text{O}_4

. If the oxidation number of oxygen is

-2

, what is the average oxidation number of iron in

\text{Fe}_3\text{O}_4

? (a)

+2

(b)

+\dfrac{7}{3}

(c)

+\dfrac{8}{3}

(d)

+3