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Solution


Q.

Which of the following electronic configuration would be associated with the highest magnetic moment                 [2024] 
1 [Ar] 3d6  
2 [Ar] 3d8  
3 [Ar] 3d3  
4 [Ar] 3d7  

Ans.

(1)

Spin only magnetic moment is given by the formula, μ=n(n+2) BM. Where n is number of unpaired electrons.

[Ar]3d6 has maximum number of unpaired electrons among the given options, hence it has the highest magnetic moment.