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Saturday, 31 October

JEE Main · Chemistry · The d- and f-Block Elements

Magnetic and Spectral Properties

JEE Main asked Magnetic and Spectral Properties 2 times in 2 of the 108 shifts Lumi analysed, in 2021 and 2024. It belongs to f-Block Elements, in The d- and f-Block Elements (Chemistry). The longest wait between two years asking it was 3 years.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2021
last in 2024
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170’200.03’210’220’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20241 of 18
  • 20230 of 12
  • 20220 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: application.

  • Order/ranking of spin-only magnetic moments
  • Identify diamagnetic ions among lanthanoids

Difficulty

Easy 0Medium 2Hard 0

Every question was multiple choice.

Every question

All 2 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 30 Jan 2024, Shift 1 · Q67Diamagnetic Lanthanoid ions are :MediumSingle correct
  2. 16 Mar 2021, Shift 2 · Q38Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the three, high spin…MediumSingle correct

Shifts: 16 Mar 2021, Shift 2, 30 Jan 2024, Shift 1.

Same topic

Other ideas in f-Block Elements

f-Block Elements has 11 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas