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Question:

The highest value of the calculated spin-only magnetic moment (in BM) among all the transition metal complexes is:

3.87

6.93

5.92

4.90

Solution:

μ=√n(n+2)BM

n=Number of unpaired electrons
n=Maximum number of unpaired electron=5
μ=5.92BM
EX:Mn2+ complex.
Hence option A is correct.