# Why must we mention the oxidation state of iron in iron oxide?

Feb 18, 2017

$F {e}_{2} {O}_{3}$ = Iron (III) Oxide
$F e O$ = Iron (II) Oxide

#### Explanation:

$F {e}_{2} {O}_{3}$ = Iron (III) Oxide:
Explains that the oxidation state of Iron in this compound $F {e}_{2} {O}_{3}$ is $F {e}^{3 +}$

$F e O$ = Iron (II) Oxide: Explains that the oxidation state of Iron in this compound $F e O$ is $F {e}^{2 +}$

Both are two different compounds, with different physical as well as chemical properties therefore it is must to mention the oxidation state along with the compound name.