Which of the following pairs of ions have the same electronic configuration A)`Cr^(+3),Fe^(+3)` B)`Fe^(+3),Mn^(+2)` C)`Fe^(+3),Co^(+3)` D)`Sc^(+3),Cr^(+3)`

Options

A. Cr^(+3),Fe^(+3)`
B. `Fe^(3+),Mn^(2+)+`
C. `Fe^(3+),CO^(3+)`
D. `Sc^(3+),Cr^(3+)`

Explanation

To determine which pairs of ions have the same electronic configuration, we will first write the electronic configurations of the neutral atoms and then adjust for the charge of the ions.

### Step-by-Step Solution:

1. **Identify the Neutral Atoms and Their Electronic Configurations**:
- Scandium (Sc): Atomic number = 21
- Electronic configuration: \( \text{[Ar]} \, 3d^1 \, 4s^2 \)
- Manganese (Mn): Atomic number = 25
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