JEE Main 2020 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 4 September 2020, Shift 2, Chemistry Q37

Question 37 of 75 in this shift, Chemistry question 12 of 25.

The one that can exhibit highest paramagnetic behaviour among the following is : gly = glycinato; bpy = 2, 2′-bipyridine

(1) $[\mathrm{Pd(gly)_2}]$
(2) $[\mathrm{Fe(en)(bpy)(NH_3)_2}]^{2+}$
(3) $[\mathrm{Co(OX)_2(OH)_2}]^-\ (\Delta_0 > P)$ Official answer
(4) $[\mathrm{Ti(NH_3)_6}]^{3+}$

Official answer

Option 3

NTA final key (Sep 2020).

Chapter: Coordination Compounds
Topic: Crystal Field Theory
Idea tested: High and Low Spin States

Same idea in other shifts

Asked 34× in all

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2 Apr 2025, Shift 2 · Q61The type of hybridization and the magnetic property of $\mathrm{[MnCl_6]^{3-}}$ are,MediumSingle correct
3 Apr 2025, Shift 2 · Q62Identify the diamagnetic octahedral complex ions from below ; A. $[\mathrm{Mn(CN)_6}]^{3-}$ B. $[\mathrm{Co(NH_3)_6}]^{3+}$ C.…MediumOther

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.