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Solution


Q.

‘Spin only’ magnetic moment is same for which of the following ions

A.   Ti3+
B.   Cr2+
C.   Mn2+
D.   Fe2+
E.   Sc3+

Choose the most appropriate answer from the options given below:                [2024]
1 B and D only  
2 A and E only  
3 B and C only  
4 A and D only  

Ans.

(1)

  Species
No. of unpaired electrons
A. Ti3+ 1
B. Cr2+ 4
C. Mn2+ 5
D. Fe2+ 4
E. Sc3+ 0

Thus B and D have same spin only magnetic moment =4(4+2)=4.90 B.M.