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Question

Identify the pairs of ions possessing equal spin only magnetic moments:

A
Co2,Ni+2
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B
Co+2,Cr+3
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C
Fe+2,Fe+3
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D
Fe+2,Cr+3
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Solution

The correct option is B Co+2,Cr+3

Spin Magnetic moment is n(n+2)

where n is the number of unpaired electrons in Co+2 and Cr+3 the number of unpaired electrons is 2. So they have same spin magnetic moment


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