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For example, FeSO 4 is named iron(2+) sulfate (with the 2+ charge on the Fe2+ ions balancing the 2â charge on the sulfate ion), whereas Fe 2 (SO 4) 3 is named iron(3+) sulfate (because the two iron ions in each formula unit each have a charge of 3+, to balance the 2â on each of the three sulfate ions).
The act of the cations and anions in an ionic compound moving apart when dissolved into water. all ionic compounds will do this to some extent. Net charge. The overall charge that an ion carries. Can be figured out by adding the charges of the remaining electrons to the charges of the protons. Binary ionic compound.