1.

Explain the effective magnetic moment of the species.

Answer»
  • The magnetic moment in the species arises due to the presence of unpaired electrons.
  • The magnetic moment depends upon the sum of orbitals and spin contribution for each unpaired electron present in the species.
  • In transition metal ions, the contribution of orbital magnetic moment is suppressed by the electrostatic field of other atoms, molecules or ions surrounding the metal ion in the compound.
  • Hence the net or effective magnetic moment arises mainly due to spin of electrons. The effective magnetic moment μeff, of a paramagnetic substance is given by 1 spin only formula represented as,  μ = \(\sqrt{n(n+2)}\) B.M. where n is the number of unpaired electrons. 


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