The oxidation states shown by Mn in the given reaction are : 2 MnO ₄⁻ + 3 Mn ²⁺ + 2 H ₂ O 5 MnO ₂ + 4 H ⁺ A. +6 B. +4 C. +3 D. +7 E. +2 Choose the correct answer from the options given below :

Step-by-step solution

In MnO ₄⁻ , let the oxidation state of Mn be x . x + 4(-2) = -1 x = +7 In Mn ²⁺ , the oxidation state of Mn is +2 . In MnO ₂ , let the oxidation state of Mn be y . y + 2(-2) = 0 y = +4 The oxidation states shown by Mn in the given reaction are +7 , +2 , and +4 . These correspond to D, E, and B respectively. Answer: B, D and E only