Question

1. what is the formula for iron (ii) oxide?

feo₂
fe₂o₃
feo
fe₂o
clear all

Explanation:

Iron (II) oxide is composed of iron (Fe) with a +2 oxidation state and oxygen (O) with a -2 oxidation state. In ionic compounds, the formula is determined by balancing the charges. Since the charges of Fe²⁺ and O²⁻ are equal in magnitude but opposite in sign, they combine in a 1:1 ratio.

Answer:

FeO