MHT CET 2025 Chemistry question

Not in JEE Main or NEET syllabus

Calculate the volume occupied by all particles in fcc unit cell if volume of unit cell is cm³

(A) cm³
(B) cm³
(C) cm³Correct
(D) cm³

Answer: (C)

Solution

In an fcc unit cell there are particles, edge and radius . Volume occupied by particles , i.e. the packing efficiency of fcc is . Hence occupied volume $= 0.74

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Question ID VK-102208