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Calcium has the symbol Ca and its ions have a charge of +2. Chlorine has the symbol Cl and its ions have a charge of -1. In the ionic compound calcium chloride, how many chloride ions are there for each calcium ion?

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Answer:

There are two chloride ions for each calcium ion

Explanation:

The compound has to have an overall neutral charge. Meaning that the positive charges from calcium have to be canceled out by the negative charges of chlorine.

If there are two chloride ions for each calcium ion, the charges would cancel themselves out (2 * -1 would cancel out with +2).

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