Answer:
The net charge of an ionic compound must be zero. Therefore, the number of cations and anions in an ionic compound must be balanced to make an electrically neutral molecule.
Explanation:
Ionic compounds are always written with lowest possible ratio between the atoms to form neutral compound. In short, when the charges are unequal and opposite, ionic compound is formed by switching the opposite charges. Cations and anions always form ionic compounds that have zero overall charge.
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