Which of the following ions has the highest magnetic moment ?

Options

A. `Te^(3+)`
B. `Sc^(3+)`
C. `Mn^(2+)`
D. `Zn^(2+)`

Answer

C

Explanation

`Ti^(3+)rarr3d^(1)4s^(0),Sc^(3+)rarr3d^(0)`
`Mn^(2+)rarr3d^(5)4s^(0),Zn^(2+)rarr3d^(10)4s^(0)`
In `Mn^(2+)` number of unpaired d `e^(-)=5`. So it has maximum magnetic moment according to the formula `mu=sqrt(n(n+2)).`