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The disproportionation of MnO 4 2 - in acidic medium resulted in the formation of two manganese compounds A and B . If the oxidation state of Mn in B is smaller than that of A , then the spin-only magnetic moment μ value of B in BM is____ . (Nearest integer)

Correct answer

0

Step-by-step solution

Potassium permanganate Is prepared by fusion of MnO 2 with an alkali metal hydroxide and an oxidising agent like KNO 3 . This produces the dark green K 2 MnO 4 which disproportionates in a neutral or acidic solution to give permanganate. 2 MnO 2 + 4 KOH + O 2 → 2 K 2 MnO 4 + 2 H 2 O 3 MnO 4 2 - + 4 H - → 2 MnO 4 - + MnO 2 + 2 H 2 O The oxidation state of Mn   in   MnO 2   is   less   Mn 4 +   so ,   it   is   B Mn 4 + = Ar 3 d 3 Where, n = 3 μ s = n n +

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