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NEET 2024
Exam
NEET
Year
2024
Subject
Chemistry
Chapter
d and f Block Elements

NEET 2024 · Chemistry · d and f Block Elements

'Spin only' magnetic moment is same for which of the following...

'Spin only' magnetic moment is same for which of the following ions? A. Ti3+\mathrm{Ti}^{3+} B. Cr2+\mathrm{Cr}^{2+} C. Mn2+\mathrm{Mn}^{2+} D. Fe2+\mathrm{Fe}^{2+} E. Sc3+\mathrm{Sc}^{3+} Choose the most appropriate answer from the options given below.

Options

  1. AA and E only
  2. BB and C only
  3. CA and D only
  4. DB and D only

Correct answer

D. B and D only

Step-by-step solution

IonsNo.ofunpairedelectronsConfigurationTi3+13d1Cr2+43d4Mn2+53d5Fe2+43d6Sc3+03d0\begin{array}{lcc}Ions & No. of unpaired electrons & Configuration \mathrm{Ti}^{3+}& 1 & 3 d¹ \\ \mathrm{Cr}^{2+}& 4 & 3 d⁴ \\ \mathrm{Mn}^{2+}& 5 & 3 d⁵ \mathrm{Fe}^{2+}& 4 & 3 d⁶ \\ \mathrm{Sc}^{3+}& 0 & 3 d⁰\end{array} Spin only magnetic moment is given by n(n+2)BM∴Cr2+\sqrt{n(n+2)} \mathrm{BM}\therefore \mathrm{Cr}^{2+}and Fe2+\mathrm{Fe}^{2+} will have same spin only magnetic moment.
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