NEED A QUICK ANSWER!!! When is a roman numeral mostly likely needed in the name of an ionic compound? a) when more than one polyatomic ion appears... b) when the anion is a polyatomic ion... c) when more

NEED A QUICK ANSWER!!!

When is a roman numeral mostly likely needed in the name of an ionic compound?

a) when more than one polyatomic ion appears...

b) when the anion is a polyatomic ion...

c) when more that one cation is used in the formula...

d) when the cation is a transition metal...

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NEED A QUICK ANSWER!!! When is a roman numeral mostly likely needed in the name of an ionic compound? a) when more than one polyatomic ion appears... b) when the anion is a poly…

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