JEE Main 2021ChemistrySolid StateCrystal Structure Of SolidsmediumNumerical

JEE Main 2021Solid State Question with Solution

From: JEE Main 2021 (Online) 16th March Morning Shift

Question

A certain element crystallises in a bcc lattice of unit cell edge length 27. If the same element under the same conditions crystallises in the fcc lattice, the edge length of the unit cel in will be ____________. (Round off to the Nearest Integer).

[Assume each lattice point has a single atom]

[Assume = 1.73, = 1.41]

Enter your answer

Show full solutionCorrect answer: 33.12
Correct answer
33.12

Step-by-step explanation

For BCC unit cell,





For FCC unit cell







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About this question

This is a previous-year question from JEE Main 2021, covering the Solid State chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.