Acidified potassium permanganate solution oxidises oxalic acid. The spin-only magnetic moment of the manganese product formed from the above reaction is ____________ B.M. (Nearest integer)
Answer (integer)
6
Solution
$\mathrm{KMnO}_{4}$ (acidic medium) $+\mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4} \rightarrow \mathrm{CO}_{2}+\mathrm{Mn}^{+2}$<br/><br/> $\mathrm{Mn}^{+2}$ has 5 unpaired electrons
<br/><br/>
$\therefore $ Spin only magnetic moment $=\sqrt{5(5+2)}$
<br/><br/>
$$
\begin{aligned}
&=\sqrt{5 \times 7} \\\\
&=\sqrt{35} \\\\
&\simeq 5.92 \text { B.M. } \\\\
&\simeq 6 \text { B.M. }
\end{aligned}
$$
About this question
Subject: Chemistry · Chapter: Coordination Compounds · Topic: Ligands and Coordination Number
This question is part of PrepWiser's free JEE Main question bank. 173 more solved questions on Coordination Compounds are available — start with the harder ones if your accuracy is >70%.