Which of the following element exhibits maximum oxidation state

Options

A. Cr
B. Mn
C. Fe
D. V

Answer

To determine which of the given elements exhibits the maximum oxidation state, we need to analyze the oxidation states of each element based on their electronic configurations.

### Step-by-Step Solution:

1. **Identify the Elements and Their Atomic Numbers:**
- Chromium (Cr) - Atomic Number 24
- Magnesium (Mg) - Atomic Number 12
- Iron (Fe) - Atomic Number 26
- Vanadium (V) - Atomic Number 23

2. **Write the Electronic Configurations:**
- Chromium: [Ar] 3d^5 4s^1
- Magnesium: [Ne] 3s^2
- Iron: [Ar] 3d^6 4s^2
- Vanadium: [Ar] 3d^3 4s^2

3. **Determine Possible Oxidation States:**
- **Chromium (Cr):**
- Maximum oxidation state: +6 (can lose all 6 valence electrons: 5 from 3d and 1 from 4s).
- **Magnesium (Mg):**
- Maximum oxidation state: +2 (can lose 2 electrons from 3s).
- **Iron (Fe):**
- Maximum oxidation state: +6 (can lose 6 electrons: 4s^2 and 3d^6).
- **Vanadium (V):**
- Maximum oxidation state: +5 (can lose 5 electrons: 3d^3 and 4s^2).

4. **Compare the Maximum Oxidation States:**
- Chromium: +6
- Magnesium: +2
- Iron: +6
- Vanadium: +5

5. **Conclusion:**
- The maximum oxidation state exhibited by both Chromium and Iron is +6, but since the question asks for the element with the maximum oxidation state, we can conclude that the answer is **Chromium (Cr)** or **Iron (Fe)**, as both exhibit the same maximum oxidation state of +6.

### Final Answer:
The element that exhibits the maximum oxidation state is **Chromium (Cr)** or **Iron (Fe)**, both having a maximum oxidation state of +6.