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 + ( a q ) 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
= 3.87 B M
Electronic configuration of M
No. of unpaired electrons = 3
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