In which of the following does an atom have +2 oxidation state?
Correct answer: D. MgO
- A. NaF
- B. NaCl
- C. Na₂O
- D. MgO
Explanation
The oxidation states of all the atoms in the given options are as follows: Na1+Cl1- Na1+F1- Na(1+)2O2- Mg2+O2-
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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