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Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceOtherMediumApplication

JEE Main 4 April 2026, Shift 2, Chemistry Q59

Question 59 of 75 in this shift, Chemistry question 9 of 25, Section A.

Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number: Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72] A. (Eu and Gd) B. (Dy and Ho) C. (Yb and Hf) D. (Lu and Tm) Choose the correct answer from the options given below:
  1. (1)B and C Only
  2. (2)A and B Only
  3. (3)A and D Only
  4. (4)A and C OnlyOfficial answer

Official answer

Option 4

NTA final key.

Chapter
The d- and f-Block Elements
Topic
f-Block Elements
Idea tested
Lanthanide Electronic Configuration

Same topic in other shifts

All f-Block Elements questions
  1. 4 Apr 2026, Shift 1 · Q60The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. Ce4+\mathrm{Ce^{4+}} and…HardOther
  2. 9 Apr 2024, Shift 1 · Q87Number of colourless lanthanoid ions among the following is ________. Eu3+,Lu3+,Nd3+,La3+,Sm3+\mathrm{Eu^{3+}, Lu^{3+}, Nd^{3+}, La^{3+}, Sm^{3+}}MediumNumerical value
  3. 6 Apr 2023, Shift 1 · Q70Strong reducing and oxidizing agents among the following, respectively, areMediumSingle correct
  4. 3 Aug 2021, Shift 2 · Q33The correct order of the basic character for the following metal hydroxides isMediumSingle correct
  5. 3 Aug 2021, Shift 2 · Q39Which one of the following statements is correct?MediumSingle correct
  6. 16 Mar 2021, Shift 2 · Q38Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the three, high spin…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 42 of the 174 JEE Main shifts held from 2017 to 2026.