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Chemical Bonds and Valence Electrons
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Grade Level
Physical Science with Earth and Science
9.31 Chemical Bonds and Valence Electrons
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Why does magnesium commonly form Mg2+ rather than Mg+ in magnesium oxide?
A
Mg+ is the only ion that can balance O2-.
B
Losing two valence electrons gives magnesium a filled lower outer shell and balances O2-.
C
Magnesium must gain two protons before bonding.
D
Magnesium has seven valence electrons and gains one.
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