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Explain magnetic behaviour of transition metals. |
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Answer» SOLUTION :Magnetic BEHAVIOUR. Most of the compounds of transition elements contain UNPAIRED electrons in their (n-1)d sub-shells. Therefore, they are paramagnetic in nature and are attracted by the magnetic field. The magnetic character is expressed in terms of magnetic moment. The larger the number of unpaired electrons in a substance, the greater is the paramagnetic character and larger is the magnetic moment. The magnetic moment is expressed in Bohr magneton abbreviated as B.M. For example, `Ti^(2+)` has 2 unpaired electrons and has less magnetic moment than `V^(2+)` which has 3 unpaired electrons. `Mn^(2+)` has 5 unpaired electrons and has maximum magnetic moment among the divalent transition metal ions because d-sub-shell can have maximum of 5 unpaired electrons. |
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