JEE Main Chemistry · Classification of Elements and Periodicity in Properties

Ionization Enthalpy Trends

Ionization Enthalpy Trends (Classification of Elements and Periodicity in Properties) was asked 7 times in 7 JEE Main shifts, 2024–2026, out of the 42 shifts Lumi analysed. 1 of the 7 had a numerical answer.

Times asked: 7; in 7 shifts
Years: 2024–2026
Usual format: Single correct; Recall
Pattern: New since 2024; repeats across shifts

How it is asked

Statement i/ii on ionization enthalpy trends
Energy from successive ionization enthalpies

Difficulty

Easy 4Medium 3Hard 0

Where it sits

Chapter: Classification of Elements and Periodicity in Properties. Topic: Periodic Trends, 42 questions over 18 ideas.

All 7 questions

Newest first, each with its options and official answer.

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
6 Apr 2026, Shift 1 · Q71First and second ionization enthalpies of lithium are 520 kJ mol $^{-1}$ and 7297 kJ mol $^{-1}$ respectively. Energy required to convert…EasyNumerical value
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
8 Apr 2026, Shift 2 · Q58Match List - I with List - II. List - I (Electronic configuration of neutral atom (where n = 2)) | List - II (1 $^{st}$ Ionization Energy…MediumMatch the list
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
8 Apr 2025, Shift 2 · Q56The atomic number of the element from the following with lowest 1 $^{st}$ ionisation enthalpy is :EasySingle correct
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