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Friday, 9 October

JEE Main Chemistry · Classification of Elements and Periodicity in Properties

Periodic Trends in JEE Main

Periodic Trends (Chemistry, Classification of Elements and Periodicity in Properties) came 42 times in 33 of the 42 JEE Main shifts Lumi analysed, across 18 distinct ideas. 29 of them came in 2024–26; it was last asked in 2026.

Questions
42
in 33 shifts
Ideas asked
18
10 asked more than once
Numerical answer
2
5% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
06120’174’204’213’222’2311’247’2511’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 18Medium 24Hard 0

Format

  • Single correct20 Q
  • Two statements8 Q
  • Other7 Q
  • Assertion–reason3 Q
  • Numerical value2 Q
  • Match the list2 Q
Ideas inside the topic
18 ideas
Where it sits

Part of Classification of Elements and Periodicity in Properties, which had 39 questions in all. Periodic Trends accounts for 108% of them. In Lumi's JEE taxonomy it belongs to Inorganic Chemistry.

Some questions sit in other chapters too: The p-Block Elements.

Every question

All 42 Periodic Trends questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 1 · Q59Given below are two statements : Statement (I) : The first ionisation enthalpy of the elements Na, Mg, Cl and Ar follows the order Na > Mg…MediumTwo statements
  2. 2 Apr 2026, Shift 2 · Q58The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:MediumSingle correct
  3. 2 Apr 2026, Shift 2 · Q59Given below are two statements: Statement I: The second ionization enthalpy of B, Al and Ga is in the order of B > Al > Ga. Statement II:…MediumSingle correct
  4. 4 Apr 2026, Shift 1 · Q59Given below are two statements: Statement I: The covalency of oxygen is generally two but it can exceed upto four. The oxidation state of…MediumTwo statements
  5. 4 Apr 2026, Shift 2 · Q57The 1st1^{\text{st}} ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2nd2^{\text{nd}} ionization…EasySingle correct
  6. 5 Apr 2026, Shift 1 · Q58Given below are two statements: Statement I: The correct order of electronegativity of fluorine, oxygen and nitrogen is F > O > N.…EasyTwo statements
  7. 5 Apr 2026, Shift 2 · Q53The covalent radii of atoms A and B are rAr_A and rBr_B, respectively. The covalent bond length and total length of AB molecule are…MediumSingle correct
  8. 5 Apr 2026, Shift 2 · Q58Given below are two statements : Statement I : The number of pairs among [Al2O3,Cr2O3]\mathrm{[Al_2O_3, Cr_2O_3]}, [Cl2O7,Mn2O7]\mathrm{[Cl_2O_7, Mn_2O_7]},…MediumTwo statements
  9. 6 Apr 2026, Shift 1 · Q71First and second ionization enthalpies of lithium are 520 kJ mol−1^{-1} and 7297 kJ mol−1^{-1} respectively. Energy required to convert…EasyNumerical value
  10. 6 Apr 2026, Shift 2 · Q58In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme right…EasySingle correct
  11. 8 Apr 2026, Shift 2 · Q58Match List - I with List - II. List - I (Electronic configuration of neutral atom (where n = 2)) | List - II (1st^{st} Ionization Energy…MediumMatch the list
  12. 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
  13. 2 Apr 2025, Shift 1 · Q59Given below are two statements : Statement (I) : The metallic radius of Al is less than that of Ga. Statement (II) : The ionic radius of…MediumTwo statements
  14. 2 Apr 2025, Shift 2 · Q58Electronic configuration of four elements A, B, C and D are given below : (A) 1s22s22p31s^22s^22p^3 (B) 1s22s22p41s^22s^22p^4 (C) 1s22s22p51s^22s^22p^5 (D)…EasySingle correct
  15. 3 Apr 2025, Shift 1 · Q60Which of the following statements are correct ? A. The process of adding an electron to a neutral gaseous atom is always exothermic. B.…MediumOther
  16. 7 Apr 2025, Shift 2 · Q59Choose the incorrect trend in the atomic radii (r) of the elements.EasySingle correct
  17. 8 Apr 2025, Shift 2 · Q56The atomic number of the element from the following with lowest 1st^{st} ionisation enthalpy is :EasySingle correct
  18. 8 Apr 2025, Shift 2 · Q57Given below are two statements: Statement I : H2Se\mathrm{H_2Se} is more acidic than H2Te\mathrm{H_2Te} Statement II : H2Se\mathrm{H_2Se} has…EasyTwo statements
  19. 6 Apr 2024, Shift 2 · Q68Evaluate the following statements related to group 14 elements for their correctness. (A) Covalent radius decreases down the group from C…MediumOther
  20. 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
  21. 9 Apr 2024, Shift 1 · Q66Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Both rhombic…MediumAssertion–reason
  22. 29 Jan 2024, Shift 1 · Q64Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : The first ionisation…EasyAssertion–reason
  23. 29 Jan 2024, Shift 1 · Q66Given below are two statements : Statement I : The electronegativity of group 14 elements from Si to Pb, gradually decreases. Statement II…MediumTwo statements
  24. 30 Jan 2024, Shift 2 · Q66Given below are two statements: Statement - I: Along the period, the chemical reactivity of the elements gradually increases from group 1…EasyTwo statements
  25. 30 Jan 2024, Shift 2 · Q67Choose the correct statements about the hydrides of group 15 elements. A. The stability of the hydrides decreases in the order…MediumOther
  26. 30 Jan 2024, Shift 2 · Q68Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: H2Te\mathrm{H_2Te} is…MediumAssertion–reason
  27. 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
  28. 31 Jan 2024, Shift 1 · Q67Consider the oxides of group 14 elements SiO2\mathrm{SiO_2}, GeO2\mathrm{GeO_2}, SnO2\mathrm{SnO_2}, PbO2\mathrm{PbO_2}, CO and GeO. The…MediumSingle correct
  29. 31 Jan 2024, Shift 2 · Q66Consider the following elements. Group ↓\downarrow A' B' →\rightarrow Period C' D' Which of the following is/are true about A', B', C'…MediumOtherHas a figure
  30. 6 Apr 2023, Shift 1 · Q64The difference between electron gain enthalpies will be maximum between:MediumSingle correct
  31. 11 Apr 2023, Shift 1 · Q64For elements B, C, N, Li, Be, O and F, the correct order of first ionization enthalpy isEasySingle correct
  32. 25 Jul 2022, Shift 1 · Q66The IUPAC nomenclature of an element with electronic configuration [Rn] 5f146d17s2[\mathrm{Rn}]\,5f^{14}6d^{1}7s^{2} is :MediumSingle correct
  33. 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
  34. 24 Jun 2022, Shift 1 · Q66Given below are the oxides : Na2O, As2O3, N2O, NO\mathrm{Na_2O,\ As_2O_3,\ N_2O,\ NO} and Cl2O7\mathrm{Cl_2O_7} Number of amphoteric oxides is :MediumSingle correct
  35. 25 Jul 2021, Shift 1 · Q33The ionic radii of K+\mathrm{K^+}, Na+\mathrm{Na^+}, Al3+\mathrm{Al^{3+}} and Mg2+\mathrm{Mg^{2+}} are in the order :EasySingle correct
  36. 16 Mar 2021, Shift 2 · Q33The characteristics of elements X, Y and Z with atomic numbers, respectively, 33, 53 and 83 are :MediumSingle correct
  37. 16 Mar 2021, Shift 2 · Q36Identify the elements X and Y using the ionisation energy values given below : Ionization energy (kJ/mol) 1st 2nd X 495 4563 Y 731 1450EasySingle correct
  38. 18 Mar 2021, Shift 1 · Q34The ionic radius of Na+\mathrm{Na^+} ion is 1.02 Å. The ionic radii (in Å) of Mg2+\mathrm{Mg^{2+}} and Al3+\mathrm{Al^{3+}}, respectively, are :EasySingle correct
  39. 8 Jan 2020, Shift 1 · Q32The first ionization energy (in kJ/mol) of Na, Mg, Al and Si respectively, are :EasySingle correct
  40. 9 Jan 2020, Shift 2 · Q32The first and second ionisation enthalpies of a metal are 496 and 4560 kJ mol−1^{-1}, respectively. How many moles of HCl and…EasySingle correct
  41. 2 Sep 2020, Shift 1 · Q32In general, the property (magnitudes only) that shows an opposite trend in comparison to other properties across a period is :EasySingle correct
  42. 6 Sep 2020, Shift 2 · Q46The atomic number of Unnilunium is ________.EasyNumerical value