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Question
Identify the following pair of species is in its oxidized state.
Mg/Mg2+
Solution
Mg/Mg2+
Here, Mg loses two electrons to form Mg2+ ion.
\[\ce{Mg_{(s)}->Mg^2+_{ (aq)} + 2e-}\]
Hence, Mg/Mg2+ is an oxidized state.
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