1.

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

Answer»

`3d^7`
`3d^5`
`3d^8`
`3d^2`

Solution :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.


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