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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 29 July 2022, Shift 2, Chemistry Q71

Question 71 of 90 in this shift, Chemistry question 11 of 30, Section A.

Octahedral complexes of copper(II) undergo structural distortion (Jahn-Teller). Which one of the given copper (II) complexes will show the maximum structural distortion?(en – ethylenediamine; H2N-CH2-CH2-NH2\mathrm{H_2N\text{-}CH_2\text{-}CH_2\text{-}NH_2})
  1. (1)[Cu(H2O)6]SO4\mathrm{[Cu(H_2O)_6]SO_4}Official answer
  2. (2)[Cu(en)(H2O)4]SO4\mathrm{[Cu(en)(H_2O)_4]SO_4}
  3. (3)cis-[Cu(en)2Cl2]\mathrm{[Cu(en)_2Cl_2]}
  4. (4)trans-[ Cu(en)2Cl2]\mathrm{[\ Cu(en)_2Cl_2]}

Official answer

Option 1

NTA final key.

Chapter
Coordination Compounds
Topic
Crystal Field Theory
Idea tested
Jahn-Teller Distortion

Same topic in other shifts

All Crystal Field Theory questions
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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.