Order of paramagnetic character among following element is/are"

Options

A. `MngtFegtCr`
B. `FegtZngtCr`
C. `CrgtFegtZn`
D. `CrgtMngtFe`

Answer

To determine the order of paramagnetic character among the given elements, we need to analyze their electronic configurations and count the number of unpaired electrons. The more unpaired electrons an element has, the stronger its paramagnetic character.

### Step-by-Step Solution:

1. **Identify the Elements**:
Let's consider the elements mentioned: Chromium (Cr), Manganese (Mn), Iron (Fe), and Zinc (Zn).

2. **Write the Electronic Configurations**:
- Chromium (Cr): \( [Ar] 4s^1 3d^5 \)
- Manganese (Mn): \( [Ar] 4s^2 3d^5 \)
- Iron (Fe): \( [Ar] 4s^2 3d^6 \)
- Zinc (Zn): \( [Ar] 4s^2 3d^{10} \)

3. **Count the Unpaired Electrons**:
- **Chromium (Cr)**:
- Configuration: \( 4s^1 3d^5 \)
- Unpaired Electrons: 6 (1 from 4s and 5 from 3d)
- **Manganese (Mn)**:
- Configuration: \( 4s^2 3d^5 \)
- Unpaired Electrons: 5 (0 from 4s and 5 from 3d)
- **Iron (Fe)**:
- Configuration: \( 4s^2 3d^6 \)
- Unpaired Electrons: 4 (0 from 4s and 4 from 3d)
- **Zinc (Zn)**:
- Configuration: \( 4s^2 3d^{10} \)
- Unpaired Electrons: 0 (0 from 4s and 0 from 3d)

4. **Determine the Order of Paramagnetic Character**:
The order of paramagnetic character is based on the number of unpaired electrons:
- Chromium (6 unpaired electrons) > Manganese (5 unpaired electrons) > Iron (4 unpaired electrons) > Zinc (0 unpaired electrons).

5. **Final Order**:
Therefore, the order of paramagnetic character among the elements is:
- **Cr > Mn > Fe > Zn**

### Conclusion:
The correct options based on the order of paramagnetic character are those that include Chromium first, followed by Manganese, and then Iron, with Zinc having the least paramagnetic character.