In which of the following compounds does an element have a +2 oxidation state?
Correct answer: A. MgO
- A. MgO
- B. NaCl
- C. NaF
- D. Na₂O
Explanation
The oxidation state of Mg in MgO is +2 as it loses two electrons during the formation of MgO. The oxidation state of Na in NaCl, Na₂O and NaF is +1.
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