Divalent

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In chemistry, divalent anions are atoms or radicals with 2 additional electrons when compared to their elemental state (that is, with 2 more electrons than protons); for instance, S-- is the sulfide anion. Conversely, a cation is missing some electrons as compared with the neutral atom. Example: iron(II) or Fe++ is the divalent cationic form of iron. The terminology arises because in solutions or arc discharges, cations are attracted to the cathode and anions to the anode.


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