The magnetic moment of 'autocatalyst' formed in the reaction between acidified oxalic acid and potassium permanganate is

5.9 BM

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4.9 BM

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3.9 BM

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2.8 BM

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Solution

The correct option is A
5.9 BM

The reactions in which one of the product catalyze the reaction is called auto catalysis
In the Oxidation of oxalic acid by acidified $K M n O_{4}, M n^{+ 2}$ (one of the product) catalyze the reaction.
Electronic configuration of $M n^{+ 2} = 3 d^{5} 4 s^{0}$

There are 5 unpaired electrons
$μ = \sqrt{n (n + 2)}$
n = number of unpaired electrons.
$μ = \sqrt{5 (5 + 2)} = 5.9 B M$

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