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Saturday, 31 October

JEE Main 2026 · ChemistryMultiple choiceOtherMediumRecall

JEE Main 6 April 2026, Shift 2, Chemistry Q60

Question 60 of 75 in this shift, Chemistry question 10 of 25, Section A.

The correct order of first (ΔiH1\Delta_iH_1) and second (ΔiH2\Delta_iH_2) ionisation enthalpy values of Cr and Mn are : A. ΔiH1\Delta_iH_1 : Cr > Mn B. ΔiH2\Delta_iH_2 : Cr > Mn C. ΔiH1\Delta_iH_1 : Mn > Cr D. ΔiH2\Delta_iH_2 : Mn > Cr Choose the correct answer from the options given below :
  1. (1)A and B only
  2. (2)B and C onlyOfficial answer
  3. (3)A and D only
  4. (4)C and D only

Official answer

Option 2

NTA final key.

Chapter
The d- and f-Block Elements
Topic
d-Block Elements
Idea tested
Ionization Enthalpy Irregularities

Same idea in other shifts

Asked 4× in all
  1. 9 Apr 2024, Shift 2 · Q86A transition metal 'M' among Sc, Ti, V, Cr, Mn and Fe has the highest second ionisation enthalpy. The spin-only magnetic moment value of…MediumNumerical value
  2. 3 Aug 2021, Shift 1 · Q33The correct order of second ionization enthalpy isMediumSingle correct
  3. 8 Jan 2020, Shift 1 · Q36The third ionization enthalpy is minimum for :MediumSingle correct

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.