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Add electron dots and charges as necessary to show the reaction of calcium and oxygen to form an ionic compound.
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Add electron dots and charges as necessary to show the reaction of calcium and oxygen to form an ionic compound.

User Alex Siepman
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well you have to have energy levels. once those energy levels are done you have electrons to put on them. only 2 on the first level then eight and eight on the third level. and more on next levels.
User JamoBox
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