JEE Main 2021 — D And F Block Elements Question with Solution
From: JEE Main 2021 (Online) 16th March Evening Shift
Question
Fex2 and Fey3 are known when x and y are :
Choose an option
Show full solutionCorrect option: C
Correct answer
Cx = F, Cl, Br, I and y = F, Cl, Br
Step-by-step explanation
FeI3 does not exist as I– reduces Fe3+ to Fe2+.
2Fe3+ + 2I – 2Fe2+ + I2.
2Fe3+ + 2I – 2Fe2+ + I2.
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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.