Question

The oxidation process involves:

• A. increase in oxidation number
• B. decrease in oxidation number
• C. no change in oxidation number
• D. none of the above

Answer 1

Answer: (A)

increase in oxidation number

The oxidation process involves increase in oxidation number of the element with lose of electron. For example: $C{u}^{2+}+Zn\to Cu+Z{n}^{2+}$

In the above reaction, the Zn undergoes oxidation with lose of electron and in the process, its oxidation number increases from 0 to +2.