What is the charge of carbonate?

Understand the Problem

The question is asking about the charge associated with the carbonate ion, which is a polyatomic ion consisting of carbon and oxygen. We will identify the usual oxidation states of the atoms involved to determine the overall charge.

Answer

-2

The final answer is -2.

Answer for screen readers

The final answer is -2.

More Information

The carbonate ion, represented chemically as CO₃²⁻, is a polyatomic ion consisting of one carbon atom and three oxygen atoms. The combined formal charges of the atoms result in an overall -2 charge for the ion.

Tips

A common mistake is to confuse the charge on individual atoms within the ion with the overall charge of the ion itself.

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