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प्रश्न
The spin only magnetic moment of Cr3+ cation is ______.
विकल्प
3.742 BM
3.755 BM
3.873 BM
3.633 BM
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उत्तर
The spin only magnetic moment of Cr3+ cation is 3.873 BM.
Explanation:
Cr = 1s2 2s2 2p6 3s2 3p6 3d5 4s1
Cr3+ = 3d3;
n = 3 (number of unpaired electrons)
Hence, `mu = sqrt("n"("n + 2"))`
`mu = sqrt(3(3 + 2))`
`mu = sqrt15`
μ = 3.873
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