MHT CET 2026 Chemistry question

Not in JEE Main or NEET syllabus

What is the number of neighbouring spheres for any particle in the fcc crystal lattice?

(A)6
(B)8
(C)10
(D)12Correct

Answer: (D)

Solution

In an fcc (ccp) lattice the atoms are closely packed in three dimensions. A sphere touches 4 neighbours in its own layer, 4 in the layer above and 4 in the layer below, giving

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Question ID VK-096065