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Crawford Rodriguez ∙
1m
Silver (Ag) for apex
2Mg(s) + O2(g) ==> 2MgOMg ===> Mg^2+ + 2e- [x2 to balance electrons] = oxidation half reaction
O2 + 4e- ===> 2O^2-
So, the final oxidation half reaction will be:
2Mg(s) ===> 2Mg^2+ + 4e-