Oxidation involves

Options

A. loss of electrons
B. gain of electrons
C. Both (a) and (b)
D. None of these

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Oxidation:**
- Oxidation is a chemical process that involves changes in the oxidation state of an atom or ion. It is essential to know what oxidation means in terms of electron transfer.

2. **Defining Oxidation:**
- Oxidation can be defined as the loss of electrons by an atom or ion. When an atom loses electrons, its oxidation state increases. This is a fundamental concept in redox (reduction-oxidation) reactions.

3. **Analyzing the Options:**
- Let's examine the options provided:
- **Option A:** Loss of electron
- **Option B:** Gain of electron
- **Option C:** Both A and B
- **Option D:** None of these

4. **Evaluating Each Option:**
- **Option A:** This is correct because oxidation involves the loss of electrons.
- **Option B:** This is incorrect because gaining electrons is associated with reduction, not oxidation.
- **Option C:** This is incorrect as it suggests both processes occur simultaneously, which is not the case for oxidation.
- **Option D:** This is incorrect as we have already established that option A is correct.

5. **Conclusion:**
- Based on the definitions and analysis, the correct answer is **Option A: Loss of electron**.