1. | NO, ZnO, CO2, CaO | 2. | ZnO, NO, CaO, CO2 |
3. | NO, CO2, ZnO, CaO | 4. | NO, CO2, CaO, ZnO |
Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is , the simplest formula for this compound is:
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