JEE Main 2023 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 6 April 2023, Shift 2, Chemistry Q67

Question 67 of 90 in this shift, Chemistry question 7 of 30, Section A.

Ion having highest hydration enthalpy among the given alkaline earth metal ions is:

(1) $\mathrm{Be^{2+}}$ Official answer
(2) $\mathrm{Ca^{2+}}$
(3) $\mathrm{Sr^{2+}}$
(4) $\mathrm{Ba^{2+}}$

Official answer

Option 1

NTA final key.

Chapter: The s-Block Elements
Topic: s-Block Elements
Idea tested: Hydration Enthalpy Trends

Same idea in other shifts

Asked 4× in all

11 Apr 2023, Shift 2 · Q88 $\mathrm{Mg(NO_3)_2{\cdot}XH_2O}$ and $\mathrm{Ba(NO_3)_2{\cdot}YH_2O}$ , represent formula of the crystalline forms of nitrate salts. Sum…MediumNumerical value
25 Jun 2022, Shift 1 · Q66Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution ?EasySingle correct
31 Aug 2021, Shift 2 · Q35Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Lithium salts…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 108 of the 174 JEE Main shifts held from 2017 to 2026.