which atom loses electron when mg combines with o2?
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Magnesium loses two electrons to form Mg2+, and oxygen gains two electrons to form O2-. The attractive force between the oppositely charged ions is what holds the molecule together.Nov 25, 2010
Magnesium (Mg): 1.2
Hydrogen (H): 2.1
Chlorine (Cl): 3.0
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magnesium.
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