Click the answer you think is correct.

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The charge per appearance of the negative ion is 2-. Use this to determine the oxidation number of the positive ion.

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You have incorrectly identified the metal.

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You have incorrectly named the negative ion.

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For another question, select one of the options from the top of the menu on the left.

Your choice indicates a polyatomic ion that is not found in this compound.

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