# Calculate Magnetic Moment of - Chemistry

Calculate magnetic moment of  Fe_((aq))^(2+) ion (Z=26).

#### Solution

Data: Fe2+

Z=26

Electronic configuration of

Fe^(2+)=1s^2 2s^2 2p^6 3s^2 3p^6 4s^@3d^6

No. of unpaired electrons = 4

To find: Magnetic moment = u

Formula: u=sqrt(n(n+2))B.M.

Solution: u=sqrt(4(4+2))

=sqrt24

u = 4.90 B.M.

Concept: General Properties of the Transition Elements (D-block)
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