Question

A compound is made up of only iron and oxygen. The ratio of iron ions to oxide ions is 2:3 in compound. The IUPAC name for this compound is -

Answer 1

Answer: iron (iii) oxide, Fe2O3.

Explanation: we must calculate the oxidation state of Fe in Fe2O3

Fe2O3 = 0

2Fe + 3(-2) = 0

2Fe — 6 = 0

2Fe = 6

Fe = 6 /2 = 3

So the oxidation state of Fe in Fe2O3 is +3

So the name of the compound is iron (iii) oxide