Which of the following metal ions has a calculated magnetic moment value of `sqrt(24)` BM ?

Options

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

Answer

B

Explanation

Calculate magnetic moment (m) `= sqrt(n(n+2))`
Only `Fe^(2+)` with n=4 has (m) `=sqrt(4(4+2))=24 BM`