Which one of the following pairs of ions have the same electronic configuration?

Options

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

Answer

B

Explanation

`Fe^(3+)(Z=26)` and `Mn^(2+)(Z=25)` are isoelectronic and have same configuration i.e.`[Ar]3d^(5)`.