Question #4b705
1 Answer
The Roman numerals are used to show the oxidation number of transition metals because some elements have more than one possible oxidation state.
Explanation:
Some metals have the ability to form differently charged ions. For example, iron can form
A Roman numeral is to indicate the charge of the iron.
Iron (
Iron (
So, iron (
(The oxide ion has a
Iron (
(Here you need to find the common multiple of 6, so two iron ions with a
Here is a video with added information about how to use Roman numerals in names of compounds.