NCERT Class XII Chemistry
Chapter - The d- and f-Block Elements
Questions with Solutions

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Question : 46
Total: 49
Calculate the ‘spin only’ magnetic moment of M2+(aq) ion (Z = 27).
Solution:  
Z = 27
Electronic configuration of M2+ is 3d7
No. of unpaired electrons = 3

µ=n(n+2)
=3(3+2)
=15
=3.87BM
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