Account for the difference in size of `Na ^(+)[ 0.095nm] and mg ^(2+) [ 0.065nm]` both of which have the same noble gas configuration.

Explanation

To account for the difference in size between Na⁺ (0.095 nm) and Mg²⁺ (0.065 nm), despite both having the same noble gas configuration, we can analyze the factors affecting ionic size step by step.

### Step-by-Step Solution:

1. **Understanding Noble Gas Configuration**:
- Both Na⁺ and Mg²⁺ have the same noble gas configuration, which is that of Neon (1s² 2s² 2p⁶). This means they both have 10 electrons.

2. **Electron Removal**:
...