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Saturday, 31 October

JEE Main · Chemistry · The p-Block Elements

Inert Pair Effect

JEE Main asked Inert Pair Effect 7 times in 7 of the 108 shifts Lumi analysed, in 2021, 2022, 2024, 2025 and 2026. It belongs to Group 13 & 14, in The p-Block Elements (Chemistry). The longest wait between two years asking it was 2 years. In 2024 and 2025 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
5 of 8
First asked
2021
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

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

00.150.30’170’200.03’210.03’220’230.09’240.25’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 2 in 18 shifts · 2025: 2 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

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

  • 20261 of 9
  • 20252 of 8
  • 20242 of 18
  • 20230 of 12
  • 20221 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

Other is the usual form. Skill tested: conceptual.

  • Count correct statements on group 13 ion
  • True statement selection on group 13 ion stability

Difficulty

Easy 2Medium 4Hard 1

Every question was multiple choice.

Every question

All 7 questions

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

  1. 4 Apr 2026, Shift 2 · Q58The electronegativity of a group 13 element 'E' is same as that of Ge (on Pauling scale and upto one decimal point). The CORRECT…HardOther
  2. 7 Apr 2025, Shift 2 · Q60The correct statements from the following are : (A) Tl3+\mathrm{Tl^{3+}} is a powerful oxidising agent (B) Al3+\mathrm{Al^{3+}} does not get…MediumOther
  3. 7 Apr 2025, Shift 1 · Q60The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 kJ mol−1\mathrm{mol^{-1}} respectively. The above…MediumSingle correct
  4. 8 Apr 2024, Shift 1 · Q66Give below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The stability order of…EasyAssertion–reason
  5. 6 Apr 2024, Shift 2 · Q67The number of ions from the following that are expected to behave as oxidising agent is :…MediumOther
  6. 26 Jun 2022, Shift 1 · Q66Choose the correct stability order of group 13 elements in their +1 oxidation state.EasySingle correct
  7. 26 Feb 2021, Shift 2 · Q38Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : In TlI3\mathrm{TlI_3},…MediumAssertion–reason

Shifts: 26 Feb 2021, Shift 2, 26 Jun 2022, Shift 1, 6 Apr 2024, Shift 2, 8 Apr 2024, Shift 1, 7 Apr 2025, Shift 2, 7 Apr 2025, Shift 1, 4 Apr 2026, Shift 2.

Same topic

Other ideas in Group 13 & 14

Group 13 & 14 has 16 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisAll repeated ideas