Q23 of 70 Page 109

Transition elements show magnetic moment due to spin and orbital motion of electrons. Which of the following metallic ions have almost same spin only magnetic moment?

Co2+ has electronic configuration of 3d7 and Cr3+ has electronic configuration of 3d3. Both have the same number of unpaired electrons, i.e 3.


Magnetic moment =


Where n is the number of unpaired electrons. So for Cr3+ and Co2+ , the number of unpaired electrons equals 3.


Magnetic moment = = 3.87 B.M

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