Write the highest oxidation state shown by an element with atomic number

Explanation

To determine the highest oxidation state of the element with atomic number 23, follow these steps:

### Step 1: Identify the Element
The element with atomic number 23 is Vanadium (V).

### Step 2: Write the Electronic Configuration
The electronic configuration of Vanadium can be written as:
\[ \text{1s}^2 \, \text{2s}^2 \, \text{2p}^6 \, \text{3s}^2 \, \text{3p}^6 \, \text{3d}^3 \, \text{4s}^2 \]
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