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InterviewSolution
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A compound forms hexagonal close-packed structure. What is the totalnumber of voids in 0.5 mol of it? How many of these are tetrahedral voids? |
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Answer» Number of atoms in 1 mole of compound = 6.022 x 10^23Number of atoms in 0.5 mol = 0.5 x 6.022 x 10^23 = 3.011 x 10^23For a hexagonal closed packed structure,Number of octahedral voids = number of atoms in the compoundTherefore, the number of octahedral voids =3.011 x 10^23AndNumber of tetrahedral voids = 2 x octahedral voids = 2 x 3.011 x 10^23 = 6.022 x 10^23The total number of voids = (6.022 + 3.011) x 10^23= 9.033 x 10^23. |
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