Find the species having highest value of magnetic moment in their ground state.

Options

A. `Cu^(+)`
B. `Cr^(3+)`
C. `Mn^(2+)`
D. `Ni^(2+)`

Answer

C

Explanation

Magnetic moment `alpha` unpaired electrons
`{:(,Cu^(+),Cr^(3+),Mn^(2+),Ni^(+2)),(,darr,darr,darr,darr),("unpaired electron",0,3,5,2):}`