Order of paramagnetic character among following elements is/are:

Options

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

Answer

To determine the order of paramagnetic character among the given elements (Manganese, Iron, Chromium, and Zinc), we need to analyze the electronic configurations of each element and identify the number of unpaired electrons.

### Step-by-Step Solution:

1. **Identify the Atomic Numbers and Electronic Configurations:**
- Manganese (Mn): Atomic number = 25; Electronic configuration = [Ar] 4s² 3d⁵
- Iron (Fe): Atomic number = 26; Electronic configuration = [Ar] 4s² 3d⁶
- Chromium (Cr): Atomic number = 24; Electronic configuration = [Ar] 4s² 3d⁴
- Zinc (Zn): Atomic number = 30; Electronic configuration = [Ar] 4s² 3d¹⁰

2. **Determine the Number of Unpaired Electrons:**
- **Manganese (Mn):**
- 3d⁵ configuration has 5 unpaired electrons (one in each of the five d orbitals).
- **Iron (Fe):**
- 3d⁶ configuration has 4 unpaired electrons (the first five d orbitals have one electron each, and one of the orbitals has a second electron paired).
- **Chromium (Cr):**
- 3d⁴ configuration typically rearranges to 3d⁵ 4s¹ to maximize unpaired electrons, resulting in 6 unpaired electrons.
- **Zinc (Zn):**
- 3d¹⁰ configuration has 0 unpaired electrons (all d orbitals are fully filled).

3. **Rank the Elements Based on Unpaired Electrons:**
- Chromium (Cr) has 6 unpaired electrons.
- Manganese (Mn) has 5 unpaired electrons.
- Iron (Fe) has 4 unpaired electrons.
- Zinc (Zn) has 0 unpaired electrons.

4. **Order of Paramagnetic Character:**
- The order of paramagnetic character from highest to lowest is:
- Chromium (Cr) > Manganese (Mn) > Iron (Fe) > Zinc (Zn)

### Final Answer:
The order of paramagnetic character among the elements is:
**Chromium (Cr) > Manganese (Mn) > Iron (Fe) > Zinc (Zn)**