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OpenStudy (anonymous):
add electron dots and charges as necessary to show the reaction of calcium and oxygen to form an ionic compound
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OpenStudy (anonymous):
balanced: Ca + O = CaO therefore no extra charges this can be further explained below: Ca has an electronic configuration of 2.8.8.2 O has an electronic configuration of 2.6 Ca therefore has 2 extra electrons on its outer shell while O needs 2 electrons to fill its outer shell. Have you learnt how to draw ionic bonding?
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