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Question: Answered & Verified by Expert
The magnetic moment of a transition metal ion is $\sqrt{15}$ BM. Therefore, the number of unpaired electrons present in it, is
ChemistryStructure of AtomKCETKCET 2009
Options:
  • A 3
  • B 4
  • C 1
  • D 2
Solution:
2142 Upvotes Verified Answer
The correct answer is: 3
$\begin{array}{lrl}\mu=\sqrt{n(n+2)} & & \\ \Rightarrow & \sqrt{15} & =\sqrt{n(n+2)} \\ \therefore & n & =3\end{array}$

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