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22-06-2016
Chemistry

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

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Аноним Аноним

29-06-2016

AN ionic compound with more than one charge uses a roman numeral. For example copper (III) sulfate and copper (II) sulfate nomenclature is used because copper has 2 charges +2 and +3. Among other metals are mercury, lead, tin, etc.

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26-12-2019

Well to put it simply, its needed when the cation is a transition metal.

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