What is the number of unpaired electrons in
(i)`Fe^(3+) (ii) Cu^(+) ` ?

Explanation

To determine the number of unpaired electrons in \( \text{Fe}^{3+} \) and \( \text{Cu}^{+} \), we will follow these steps:

### Step 1: Determine the electronic configuration of Fe and Cu

- **Iron (Fe)** has an atomic number of 26. Its electronic configuration is:
\[ \text{Fe}: [\text{Ar}] 3d^6 4s^2 \]
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