Question

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

• A. 5.9 BM
• B. 4.9 BM
• C. 3.9 BM
• D. 2.8 BM

Answer 1

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 $KMn{O}_4,M{n}^{+2}$ (one of the product) catalyze the reaction.
Electronic configuration of $M{n}^{+2}=3d^{5}4s^0$

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