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NTA Abhyas JEE Main2020Chemistryd and f Block ElementsPractice

C r 2 + and M n 3 + both have d 4 configuration. Thus

Options

  1. Aboth are reducing agents
  2. Bboth are oxidizing agents
  3. CC r 2 + is an oxidizing agent while M n 3 + is a reducing agent.
  4. DM n 3 + is an oxidizing agent while C r 2 + is a reducing agent.

Correct answer

D. M n 3 + is an oxidizing agent while C r 2 + is a reducing agent.

Step-by-step solution

M n 3 + + e - → M n 2 + Extra stability is gained when M n 3 + is reduced to M n 2 + and is thus an oxidizing agent. C r 2 + → C r 3 + + e -

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