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)
Correct Answer: 6
Solution and Explanation
\(KMnO_4\text {(acidic-medium)} + H_2C_2O_4 → CO_2 + Mn^{2+}\)
\(Mn^{+2}\) has \(5\) unpaired electrons
∴ Spin only magnetic moment
\(= \sqrt {5(5+2)}\)
\(= \sqrt {5 \times 7}\)
\(= \sqrt {35}\)
\(≈ 5.92 \ B.M\)
\(≈ 6 \ B.M\)
So, the answer is \(6\).
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.