A metallic element crystallizes into a lattice containing a sequence of layers of AB AB AB....Any packing of spheres leaves out voids in the lattice. The empty space in percentage by volume in this lattice is:
A
26%
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B
32%
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C
20%
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D
30%
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Solution
The correct option is A 26% AB AB type close packing is actually Hexagonal close packing. In HCP, the space occupied by atoms is 74% and empty space due to voids is 26%.