Question

'Spin only' magnetic moment is same for which of the following ions? A. \(Ti^{3+}\)
B. \(Cr^{2+}\)
C. \(Mn^{2+}\)
D. \(Fe^{2+}\)
E. \(Sc^{3+}\)
Choose the most appropriate answer from the options given below:

• A. B and D only
• B. A and E only
• C. B and C only
• D. A and D only

Hint:

For \(d^n\) configuration: \[ n \leq 5 \Rightarrow \text{Unpaired electrons} = n \] \[ n > 5 \Rightarrow \text{Unpaired electrons} = 10-n \] This shortcut helps in rapid calculation of magnetic moments.

Answer 1

The Correct Option is A