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प्रश्न
Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about Cerium is incorrect?
पर्याय
The common oxidation states of cerium are + 3 and + 4.
The +3 oxidation state of cerium is more stable than the +4 oxidation state.
The +4 oxidation state of cerium is not known in solutions.
Cerium (IV) acts as an oxidising agent.
MCQ
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उत्तर
The +4 oxidation state of cerium is not known in solutions.
Explanation:
The +4 oxidation state is known in solution, especially in acidic medium (e.g., ceric sulphate).
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