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JEE Main202225 Jun 2022Morning ShiftChemistryd and f Block ElementsActual

Cerium IV has a noble gas configuration. Which of the following is correct statement about it?

Options

  1. AIt will prefer to gain electron and act as an oxidizing agent
  2. BIt will prefer to give away an electron and behave as reducing agent
  3. CIt will not prefer to undergo redox reactions.
  4. DIt acts as both, oxidizing and reducing agent.

Correct answer

A. It will prefer to gain electron and act as an oxidizing agent

Step-by-step solution

Formation of Ce IV is favoured by its noble gas configuration but it is strong oxidant reverting to the + 3 state. The E o value for Ce 4 + Ce 3 + is E Ce 4 + / Ce 3 + o = 1 . 74   V is favourable for its oxidising nature.

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