JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Identify the metal ions among \(Co ^{2+}, Ni ^{2+}, Fe ^{2+}, V ^{3+}\) and \(Ti ^{2+}\) having a spin-only magnetic moment value more than 3.0 BM . The sum of unpaired electrons present in the high spin octahedral complexes formed by those metal ions is ______.
- A 7
- B 5
- C 9
- D 4
Answer & Solution
Correct Answer
(A) 7
Step-by-step Solution
Detailed explanation
\(V^{3+}=(A r)_{18} 3 d^2\) \(Ti ^{2+}=( Ar )_{18} 3 d^2\) \(Ni ^{2+}=( Ar )_{18} 3 d^8\) \(Fe ^{2+}=( Ar )_{18} 3 d^6\) \(Co ^{2+}=( Ar )_{18} 3 d^7\) Only for \(Fe ^{2+}\) and \(Co ^{2+} \mu\) is more than 3.0 B.M. \(Fe ^{2+} 3 d^6\) \(n =4, \mu>3\) \(Co ^{2+} 3 d^7\)…
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