JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
A first row transition metal in its \(+2\) oxidation state has a spin-only magnetic moment value of \(3.86 \mathrm{BM}\). The atomic number of the metal is _______.
- A \(25\)
- B \(26\)
- C \(22\)
- D \(23\)
Answer & Solution
Correct Answer
(D) \(23\)
Step-by-step Solution
Detailed explanation
\({ }_{22} \mathrm{Ti}^{+2} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^2\) \({ }_{23} \mathrm{~V}^{-2} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^3\) \({ }_{25} \mathrm{Mn}^{+2} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^5\)…
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