Number of unpaired electrons in `Fe^(3+)` (Z = 26) is

Explanation

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

### Step 1: Determine the atomic number of iron (Fe)
The atomic number (Z) of iron (Fe) is given as 26.

### Step 2: Write the electronic configuration of neutral iron (Fe)
The electronic configuration of neutral iron (Fe) can be determined by filling the orbitals according to the Aufbau principle. For \( Z = 26 \), the electronic configuration is:
\[
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