CBSE Class 12-science Answered
A mettalic element crystallises into a lattice containing a sequence of layers of AB AB AB ...any packing of spheres leaves out voids in the lattice . What percentage by volume of this lattice is empty space
Asked by Farooq Ahmad Shah | 14 Jan, 2016, 05:18: PM
Expert Answer
hcp crystal lattice consists of ABABAB layers.
The packing efficiency for hcp is 74%.
Hence, percentage by volume of the empty space is 26%.
Answered by Prachi Sawant | 14 Jan, 2016, 06:20: PM
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