JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
Among \(\mathrm{VO}_2^{+}, \mathrm{MnO}_4^{-}\)and \(\mathrm{Cr}_2 \mathrm{O}_7^{2-}\), the spin-only magnetic moment value of the species with least oxidising ability is _______\(BM\) (Nearest integer). (Given atomic member \(\mathrm{V}=23, \mathrm{Mn}=25, \mathrm{Cr}=24\) )
- A \(1\)
- B \(0\)
- C \(5\)
- D \(8\)
Answer & Solution
Correct Answer
(B) \(0\)
Step-by-step Solution
Detailed explanation
For \(3\)d transition series; Oxidising power : \(\mathrm{V}^{+5}<\mathrm{Cr}^{+6}<\mathrm{Mn}^{+7}\) \(\mathrm{V}^{-5}:[\mathrm{Ar}] 4 \mathrm{~s}^0 3 \mathrm{~d}^0\) Number of unpaired electron \(=0\) \(u=0\)
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