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9 November, 17:19

Which of these chemical formulas represents two elements whose atoms have joined together with an ionic bond? A. O2 B. CaO C. NeNe D. MgCa

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  1. 9 November, 20:09
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    B: CaO

    Because Calcium is a Metal and Oxygen is a Non-Metal. Ionic bonds are only formed with a Metal and a Non-Metal element.
  2. 9 November, 20:42
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    C. NeNe ...
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