The pair o f ions configuration is ....

Options

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

Explanation

So, `Fe^(3+) and Mn^(2+)` have the same electronic configureation.