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The E _ M ⁺³ / M ²⁺ ^ values for Cr , Mn , Fe and Co are -0.41,+1.57,+0.77 and +1.97 ~V respectively. For which one of these metals the change in oxidation state form +2 to +3 is easiest?

Options

  1. ACr
  2. BCo
  3. CFe
  4. DMn

Correct answer

A. Cr

Step-by-step solution

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