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Saturday, 31 October

JEE Main · Chemistry · Classification of Elements and Periodicity in Properties

Electron Gain Enthalpy

JEE Main asked Electron Gain Enthalpy 10 times in 10 of the 108 shifts Lumi analysed, in 2021, 2022, 2023, 2024 and 2025. It belongs to Periodic Trends, in Classification of Elements and Periodicity in Properties (Chemistry). The longest wait between two years asking it was 1 year. In 2021, 2022 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
10
in 10 shifts
Years
5 of 8
First asked
2021
last in 2025
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2023, 2024 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170’200.07’210.10’220.07’230.14’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 3 in 24 shifts · 2023: 1 in 12 shifts · 2024: 3 in 18 shifts · 2025: 1 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
  • 20251 of 8
  • 20243 of 18
  • 20231 of 12
  • 20223 of 24
  • 20212 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Other is the usual form. Skill tested: conceptual.

  • Order/ranking of electron gain enthalpy
  • Properties irregular in a group

Difficulty

Easy 2Medium 8Hard 0

Every question was multiple choice.

Every question

All 10 questions

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

  1. 2 Apr 2025, Shift 1 · Q58The property/properties that show irregularity in first four elements of group-17 is/are : (A) Covalent radius (B) Electron affinity (C)…MediumOther
  2. 31 Jan 2024, Shift 1 · Q66The correct sequence of electron gain enthalpy of the elements listed below is A. Ar B. Br C. F D. S Choose the most appropriate from the…MediumOther
  3. 8 Apr 2024, Shift 1 · Q68Match List I with List II LIST I (Elements): A. Cl, S; B. Ge, As; C. Fr, Ra; D. F, O LIST II (Properties in their respective groups): I.…MediumMatch the list
  4. 6 Apr 2024, Shift 1 · Q66The electron affinity value are negative for A. Be→Be−\mathrm{Be \rightarrow Be^-} B. N→N−\mathrm{N \rightarrow N^-} C.…MediumOther
  5. 13 Apr 2023, Shift 1 · Q64Which of the following statements are not correct ? A. The electron gain enthalpy of F is more negative than that of Cl. B. Ionization…MediumOther
  6. 30 Jun 2022, Shift 1 · Q66The correct order of electron gain enthalpy (−-ve value) is :EasySingle correct
  7. 25 Jun 2022, Shift 2 · Q66The correct order of electron gain enthalpies of Cl, F, Te and Po isMediumSingle correct
  8. 28 Jul 2022, Shift 1 · Q65In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical ? (A) Rb and Cs (B) Na…MediumOther
  9. 17 Mar 2021, Shift 1 · Q33The absolute value of the electron gain enthalpy of halogens satisfies :EasySingle correct
  10. 26 Feb 2021, Shift 2 · Q33The correct order of electron gain enthalpy is :MediumSingle correct

Shifts: 26 Feb 2021, Shift 2, 17 Mar 2021, Shift 1, 25 Jun 2022, Shift 2, 30 Jun 2022, Shift 1, 28 Jul 2022, Shift 1, 13 Apr 2023, Shift 1, 31 Jan 2024, Shift 1, 6 Apr 2024, Shift 1, 8 Apr 2024, Shift 1, 2 Apr 2025, Shift 1.

Same topic

Other ideas in Periodic Trends

Periodic Trends has 25 ideas JEE Main has asked; 17 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas