JEE Main 2021 — D And F Block Elements Question with Solution
From: JEE Main 2021 (Online) 16th March Morning Shift
Question
Given below are two statements :
Statement I : The Eo value for Ce4+ / Ce3+ is + 1.74 V.
Statement II : Ce is more stable in Ce4+ state than Ce3+ state.
In the light of the above statements, choose the most appropriate answer from the options given below :
Statement I : The Eo value for Ce4+ / Ce3+ is + 1.74 V.
Statement II : Ce is more stable in Ce4+ state than Ce3+ state.
In the light of the above statements, choose the most appropriate answer from the options given below :
Choose an option
Show full solutionCorrect option: D
Correct answer
DStatement I is correct but statement II is incorrect
Step-by-step explanation
Ce4+ Ce3+ E° = +1.74 V
Positive SRP and higher SRP means greater oxidising power. So, Ce4+ wants to reduce to Ce3+. Indicates Ce4+ is less stable than Ce3+.
Positive SRP and higher SRP means greater oxidising power. So, Ce4+ wants to reduce to Ce3+. Indicates Ce4+ is less stable than Ce3+.
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This is a previous-year question from JEE Main 2021, covering the D And F Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.