The spin only magnetic moment ( $\mu$) value (B.M.) of the compound with strongest oxidising power among…

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).

Solution

Strongest oxidising power among the option is $\mathrm{Mn}_2 \mathrm{O}_3$ because of $\mathrm{E}^{\circ}$ value
$\begin{aligned}
& \mathrm{E}_{\mathrm{Mn}^{+3} / \mathrm{Mn}^{+2}}^{\circ}=+1.57 \mathrm{~V} \\
& \mathrm{Mn}^{+3} \rightarrow \mathrm{~d}^4 \text { configuration } \\
& \mu=\sqrt{24} \mathrm{BM} \\
& =4.89 \mathrm{BM} \\
& \Rightarrow 5
\end{aligned}$

Asked in: JEE Main 2025 (28 Jan Shift 2)

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