what is the total number of voids in cubic close packed lattice
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The answer to the first question is that the number of tetrahedral voids per atom is two and the number of octahedral voids per atom is one. These are the same as those for Cubic Close-Packed (CCP) structure. To answer the 2nd question we should note that the primitive unit cell of the HCP structure contains two atoms.
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In solids, the constituent particles are close-packed, leaving the minimum vacant space. It constitutes a regular arrangement namely ‘Close-Packing’. Let us consider the constituent particles as identical hard spheres and build up the three dimensional structure in three steps. They are;
a) Close Packing in One Dimension
b) Close Packing in Two Dimension
c) Close Packing in Three Dimension
In solids, the constituent particles are close-packed, leaving the minimum vacant space. It constitutes a regular arrangement namely ‘Close-Packing’. Let us consider the constituent particles as identical hard spheres and build up the three dimensional structure in three steps. They are;
a) Close Packing in One Dimension
b) Close Packing in Two Dimension
c) Close Packing in Three Dimension
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