Home Chemistry Solid State General The hexagonal close-packed lattice can be re…
Chemistry Solid State General Single Correct MCQ
Published on: August 13, 2026

The hexagonal close-packed lattice can be represented by (as shown in fig.) if c = a = 1.633a. There is an atom at each corner of the unit cell and another atom which can be located by moving one-third the distance along the diagonal of the rhombus base, starting at the lower left-hand corner and moving perpendicularly upward by c/2 (as shown in fig.). Mg crystallizes in this lattice and has a density of 1.74 g/cm 3 .

A
What is the volume of the unit cell ?
B
What is a ?
C
What is the distance between nearest neighbours ?
D
How many nearest neighbours does each atom have ?

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46.4Å 3 , 3.2 Å, 3.2 Å, 12

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