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→Why is Calcium Chloride CaCl2 Rather than CaCl or CaCl3?
A similar sort of argument applies to the negative ion. For example, [[oxygen]] forms an O<sup>2-</sup> ion rather than an O<sup>-</sup> ion or an O<sup>3-</sup> ion, because compounds containing the O<sup>2-</sup> ion turn out to be the most energetically stable.
A similar sort of argument applies to the negative ion. For example, [[oxygen]] forms an O<sup>2-</sup> ion rather than an O<sup>-</sup> ion or an O<sup>3-</sup> ion, because compounds containing the O<sup>2-</sup> ion turn out to be the most energetically stable.
[[Category:Chemistry]]
[[Category:Chemical bonding]]