Question
Identify from the following reactions the reactants that undergo oxidation and reduction.
$2 Mg + O _2 \rightarrow 2 MgO$
$2 Mg + O _2 \rightarrow 2 MgO$
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| Column I | Column II |
| (1) Noble gas | (a) 18 elements |
| (2) First period | (b) Eight elements |
| (3 ) Second period | (c) Two elements |
| (4) 3rd period | (d) Helium |
| (e) Six electrons in the last orbit |
