MHT CET 2026 Chemistry question

Not in JEE Main or NEET syllabus

What is the total number of adjacent unit cells shared by each face particle of fcc unit cell ?

(A)1
(B)2Correct
(C)4
(D)8

Answer: (B)

Solution

In a cubic lattice a face-centred particle lies on the face common to two neighbouring unit cells, so it is shared equally between 2 unit cells and contributes of itself to each. Therefore the 6 face-centred atoms of fcc contribute atoms, and

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Question ID VK-100290