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MHT CET Chemistry question

ChemistryThe Solid StateMHT CET

Not in JEE Main or NEET syllabus

How many atoms are there in a unit cell of Mg which forms hexagonal crystals, there being a face-centered atom in each end of the unit cell and 3 completely enclosed atoms within the unit cell?

Answer: (B)

Solution

Hcp unit cell: 12 corners × 1/6 = 2, 2 face-centred atoms × 1/2 = 1 and 3 enclosed

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Question ID VK-042984