JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 28 June 2022, Shift 1, Chemistry Q68

Question 68 of 90 in this shift, Chemistry question 8 of 30, Section A.

Which one of the lanthanoids given below is the most stable in divalent form?

(1)Ce (Atomic Number 58)
(2)Sm (Atomic Number 62)
(3)Eu (Atomic Number 63)Official answer
(4)Yb (Atomic Number 70)

Official answer

Option 3

NTA final key.

Chapter: The d- and f-Block Elements
Topic: f-Block Elements
Idea tested: Lanthanide Oxidation States

Same idea in other shifts

Asked 4× in all

13 Apr 2023, Shift 1 · Q70The pair of lanthanides in which both elements have high third - ionization energy is:MediumSingle correct
26 Jun 2022, Shift 2 · Q69The most common oxidation state of Lanthanoid elements is +3. Which of the following is likely to deviate easily from +3 oxidation state?MediumSingle correct
26 Feb 2021, Shift 1 · Q38Which one of the following lanthanoids does not form $\mathrm{MO_2}$ ? [M is lanthanoid metal]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.