What may be the stable oxidation state of the transition element with the following d electron configurations in the ground state of their atoms : `3d^(3),3d^(5),3d^(8)`and `3d^(4)`?

Explanation

To determine the stable oxidation states of transition elements based on their d electron configurations, we analyze each configuration step by step.

### Step 1: Identify the Element for 3d³
The electron configuration `3d³` corresponds to the element Vanadium (V), which has an atomic number of 23.

**Stable Oxidation States of Vanadium:**
Vanadium can exhibit several oxidation states, primarily:
- +2
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