JEE Main 2020ChemistrySolid StateMediumMCQ

JEE Main 2020Solid State Question with Solution

JEE Main 2020 (05 Sep Shift 2)

Question

An element crystallises in a face–centred cubic (fcc) unit cell with cell edge a. The distance between the centres of two nearest octahedral voids in the crystal lattice is:

Choose an option

Show full solutionCorrect option: A
Correct answer
Aa2

Step-by-step explanation

In FCC octahedral voids are present at the edge centers and body center.

Minimum distance between centers of two octahedral voids

=x=a22+a22
=a24+a24=a2

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About this question

This is a previous-year question from JEE Main 2020, 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.