Learn

Friday, 9 October

JEE Main 2025 · ChemistryMultiple choiceSingle correctHardMulti-step

JEE Main 2 April 2025, Shift 1, Chemistry Q61

Question 61 of 75 in this shift, Chemistry question 11 of 25, Section A.

A molecule with the formula AX4Y\mathrm{AX_4Y} has all it's elements from p-block. Element A is rarest, monoatomic, non-radioactive from its group and has the lowest ionization enthalpy value among A, X and Y. Elements X and Y have first and second highest electronegativity values respectively among all the known elements. The shape of the molecule is :
  1. (1)Octahedral
  2. (2)Trigonal bipyramidal
  3. (3)Square pyramidalOfficial answer
  4. (4)Pentagonal planar

Official answer

Option 3

NTA final key.

Chapter
Chemical Bonding and Molecular Structure
Topic
VSEPR Theory
Idea tested
Square Pyramidal Geometry (SN=6, 1 LP)

Same idea in other shifts

Asked 3× in all
  1. 30 Jan 2024, Shift 2 · Q63The molecule / ion with square pyramidal shape isEasySingle correct
  2. 6 Apr 2023, Shift 1 · Q83The number of species from the following which have square pyramidal structure is ________…MediumNumerical value

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.