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Question: Answered & Verified by Expert
Choose the correctly paired gaseous cation and its magnetic (spin only) moment (in B.M.)
ChemistryStructure of AtomAIIMSAIIMS 2014
Options:
  • A $\mathrm{Ti}^{2+}, 3.87$ B.M.
  • B $\mathrm{Cr}^{2+}, 4.90$ B.M.
  • C $\mathrm{Co}^{3+}, 3.87$ B.M.
  • D $\mathrm{Mn}^{2+}, 4.90$ B.M.
Solution:
2799 Upvotes Verified Answer
The correct answer is: $\mathrm{Cr}^{2+}, 4.90$ B.M.
Using expression, $\mu=\sqrt{n(n+2)}$ B.M. (where, $n=$ no. of unpaired electrons)

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