Which of the following pair has similar magnetic moment?

Options

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

Answer

B

Explanation

5 unpaired electrons in both.