Which ion has the least value of theoretical magnetic moment?

Options

A. `Cr^(3+)`
B. `Co^(3+)`
C. `Ti^(3+)`
D. `V^(3+)`

Answer

C

Explanation

Magnetic moment `mu= sqrt(n(n+2)) BM`
`Cr^(+3) = |Ar|, 3d^(3)` number of unpaired `e^(-) = 3`
` Cr^(+3) = |Ar|, 3d^(6)` number of unpaired `e^(-) = 4`
`Ti^(+3) = |Ar|, 3d^(1)` number of unpaired `e^(-) = 1`
`v^(+3) = |Ar|, 3d^(2)` number of unpaired `e^(-) = 2`
least magnetic moment shows by `Ti^(+3)`