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The prefixes mono-, di-, tri-, tetra-, are used only with covalent compounds, and this compound is ionic.

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The Roman numeral indicates the charge per appearance of the positive ion.

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The prefixes mono-, di-, tri-, tetra-, are used only with covalent compounds, and this compound is ionic.

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This compound contains a transition metal that forms more than one type of ion. A Roman numeral must be used in the name of this compound.

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