Question
Question: A metal crystallizes into a lattice containing a sequence of layers As AB ABAB ……. . What percentage...
A metal crystallizes into a lattice containing a sequence of layers As AB ABAB ……. . What percentage of voids are left in the lattice?
A
72%
B
48 %
C
26 %
D
32 %
Answer
26 %
Explanation
Solution
ABAB packing is hexagonal close packing in which all atoms occupy 74% of the total space. Hence, 26% of the space is empty or voids.