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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 25 July 2022, Shift 2, Chemistry Q71

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

The correct order of energy of absorption for the following metal complexes is A : [Ni(en)3]2+\mathrm{[Ni(en)_3]^{2+}}, B : [Ni(NH3)6]2+\mathrm{[Ni(NH_3)_6]^{2+}}, C : [Ni(H2O)6]2+\mathrm{[Ni(H_2O)_6]^{2+}}
  1. (1)C < B < AOfficial answer
  2. (2)B < C < A
  3. (3)C < A < B
  4. (4)A < C < B

Official answer

Option 1

NTA final key.

Chapter
Coordination Compounds
Topic
Crystal Field Theory
Idea tested
Spectrochemical Series

Same idea in other shifts

Asked 6× in all
  1. 2 Apr 2026, Shift 1 · Q62Match List - I with List - II. List - I : Chromium (III) Complexes (en = ethylene diamine) List - II : Δ0\Delta_0 (cm−1\mathrm{cm^{-1}}) A.…MediumMatch the list
  2. 4 Apr 2024, Shift 1 · Q70The correct sequence of ligands in the order of decreasing field strength is :MediumSingle correct
  3. 5 Apr 2024, Shift 1 · Q70The correct order of ligands arranged in increasing field strength.EasySingle correct
  4. 6 Apr 2024, Shift 1 · Q71Consider the following complexes [CoCl(NH3)5]2+\mathrm{[CoCl(NH_3)_5]^{2+}}, [Co(CN)6]3−\mathrm{[Co(CN)_6]^{3-}}, [Co(NH3)5(H2O)]3+\mathrm{[Co(NH_3)_5(H_2O)]^{3+}},…MediumSingle correct
  5. 2 Sep 2020, Shift 2 · Q37Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of Mn+\mathrm{M^{n+}} ion are provided below; their λmax⁡\lambda_{\max}…MediumDiagram basedHas a figure

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.