JEE Main 2025 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 8 April 2025, Shift 2, Chemistry Q56

Question 56 of 75 in this shift, Chemistry question 6 of 25, Section A.

The atomic number of the element from the following with lowest 1

^{st}

ionisation enthalpy is :

(1)19
(2)87Official answer
(3)35
(4)32

Official answer

Option 2

NTA final key.

Chapter: Classification of Elements and Periodicity in Properties
Topic: Periodic Trends
Idea tested: Ionization Enthalpy Trends

Same idea in other shifts

Asked 7× in all

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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
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

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.