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JEE Main 2022 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 24 June 2022, Shift 1, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

Atoms of element X form hcp lattice and those of element Y occupy

\frac{2}{3}

of its tetrahedral voids. The percentage of element X in the lattice is ______. (Nearest integer)

Official answer

43

NTA final key (2022 Session 1).

Chapter: The Solid State
Topic: Crystal Lattices
Idea tested: Empirical Formula from Void Occupancy

Same idea in other shifts

Asked 2× in all

6 Sep 2020, Shift 2 · Q41A crystal is made up of metal ions 'M $_1$ ' and 'M $_2$ ' and oxide ions. Oxide ions form a ccp lattice structure. The cation 'M $_1$ '…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.