Which of the following ions has a magnetic moment of 5.93 BM? (Atomic number of V=23, Cr=24, Mn=25,Fe=26)

Options

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

Answer

A

Explanation

Magnetic moment `=sqrt(n(n+2))BM`
where, n=number of unpaired electrons `5.93=sqrt(n(n+2))` solving n, we get , n=5
`Mn^(2+)ions(3d^(5))` has 5 unpaired electrons and magnetic moment is 5.93BM.