The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition elements which shows highest magnetic moment?

Options

A. `3d^7`
B. `3d^5`
C. `3d^8`
D. `3d^2`

Answer

B

Explanation

The larger the number of unpaired electrons in a element, the greater is the paramagnetic character and larger is the magnetic movement, this can be calculated from the relation.
`mu = sqrt(n(n+2)) B.M`
Where, n is the number of unpaired electrons and u is magnetic moment. `3d^(5)` contain highest unpaired electron so have highest magnetic moment.