How do you find the roman numeral in binary AND ionic compounds?

In naming the transition metal ion, add a Roman numeral in parenthesis after the name of the transition metal ion. The Roman numeral must have the same value as the charge of the ion. In our example, the transition metal ion Fe2+ would have the name iron(II). Add the name of the anion to the transition metal ion.

Explanation:

b i think it’s a water wheel turning in a stream

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