Chemistry · d and f Block Elements

JEE Main 2025 — 28 January, Evening Shift — Question 42

The spin only magnetic moment ( $\mu$ ) value (B.M.) of the compound with strongest oxidising power among $\mathrm{Mn}_{2} \mathrm{O}_{3}, \mathrm{TiO}$ and VO is____B.M. (Nearest integer).

Answer: 5

Numerical answer — enter this value.

Step-by-step solution

Strongest oxidising power among the option is

$\mathrm{Mn}_{2} \mathrm{O}_{3}$ because of $\mathrm{E}^{\circ}$ value

$\mathrm{E}_{\mathrm{Mn}^{+3} / \mathrm{Mn}^{+2}}^{\circ}=+1.57 \mathrm{~V}$

$\mathrm{Mn}^{+3} \rightarrow \mathrm{~d}^{4}$ configuration

$\mu=\sqrt{24} \mathrm{BM}$

$=4.89 \mathrm{BM}$

$\Rightarrow 5$

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Exam: JEE Main 2025
Paper: 28 January, Evening Shift
Subject: Chemistry
Chapter: d and f Block Elements
Topic: Properties of general compounds of transition elements

Answer: 5

Step-by-step solution

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