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Element X has an electron configuration of 2-8-2. This element will combine with the oxide ion to form a compound with the formula
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Element X has an electron configuration of 2-8-2. This element will combine with the oxide ion to form a compound with the formula

User Ejoubaud
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2+8+2 = 12 electrons
Magnesium has 12 electrons
Magnesium and oxide combine to for Magnesium Oxide
Mg^2+ + O^2- = MgO
User Pedram Marandi
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