Write the electronic configuration of (i) `Mn^(4+) (ii) Fe^(3+) (iii) Cr^(2+) ` and (iv) `Zn^(2+)`. Report the number of upaired electrons in each case.

Explanation

To solve the problem of writing the electronic configurations for Mn^(4+), Fe^(3+), Cr^(2+), and Zn^(2+) and determining the number of unpaired electrons, we will follow these steps:

### Step 1: Determine the Atomic Number
- **Manganese (Mn)** has an atomic number of 25.
- **Iron (Fe)** has an atomic number of 26.
- **Chromium (Cr)** has an atomic number of 24.
- **Zinc (Zn)** has an atomic number of 30.

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