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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 11 April 2023, Shift 2, Chemistry Q72

Question 72 of 90 in this shift, Chemistry question 12 of 30, Section A.

If Ni2+\mathrm{Ni^{2+}} is replaced by Pt2+\mathrm{Pt^{2+}} in the complex [NiCl2Br2]2−\mathrm{[NiCl_2Br_2]^{2-}}, which of the following properties are expected to get changed ? A. Geometry B. Geometrical isomerism C. Optical isomerism D. Magnetic properties
  1. (1)A and D
  2. (2)B and C
  3. (3)A, B and C
  4. (4)A, B and DOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Coordination Compounds
Topic
Coordination Isomerism
Idea tested
Square Planar Geometry

Same idea in other shifts

Asked 3× in all
  1. 18 Mar 2021, Shift 1 · Q40The correct structures of trans-[NiBr2(PPh3)2]\mathrm{[NiBr_2(PPh_3)_2]} and meridional-[Co(NH3)3(NO2)3]\mathrm{[Co(NH_3)_3(NO_2)_3]}, respectively, are :MediumDiagram basedHas a figure
  2. 8 Jan 2020, Shift 2 · Q38Among (a) – (d), the complexes that can display geometrical isomerism are : (a) [Pt(NH3)3Cl]+\mathrm{[Pt(NH_3)_3Cl]^+} (b)…MediumSingle correct

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.