JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 26 February 2021, Shift 1, Chemistry Q38

Question 38 of 90 in this shift, Chemistry question 8 of 30, Section A.

Which one of the following lanthanoids does not form

\mathrm{MO_2}

? [M is lanthanoid metal]

(1)Nd
(2)Dy
(3)Pr
(4)YbOfficial answer

Official answer

Option 4

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
28 Jun 2022, Shift 1 · Q68Which one of the lanthanoids given below is the most stable in divalent form?EasySingle 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.