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Which of the following lattices has the ...

Which of the following lattices has the highest packing efficency (a) simple cubic, (b) body-centred cubic, and (c ) hexagonal close-packed lattice?

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The packing efficiency of the different types of arrangement is :
(i) Simple cubic = `52.4%` (ii) Body-centred cubic = `68%`
(iii) Hexagonal close packed = `74%`
This means that hexagonal close packed arrangement has the maximum packing efficiency `(74%)`. For more details, consult section 12.
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DINESH PUBLICATION-SOLID STATE-N.C.E.R.T
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  5. What type of defect can arise when a solid is heated? Which physica...

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  6. What type of stoichiometric defect is shown by: (a) ZnS (b) AgBr

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  7. Explain how vacancies are introduced in an ionic solid when a cation ...

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  8. Ionic solids, which have anioninc vacancies due to metal excess defect...

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  9. A group-14 element is to be converted into n-type semiconductor by dop...

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  10. What type of substances would make better permanent magnets, ferromagn...

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  11. Define the term "amorphous". Give a few example of amorphous solids.

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  12. What makes a glass different from a solid such as quartz? Under what c...

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  13. Classify each of the following solids as ionic, metallic, molecular, n...

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  14. What is meant by the term "coordination number"? b. What is the coor...

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  15. How can you determine the atoic mass of an unknown metal if you know i...

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  16. a. "Stability of a crystal is reflected is reflected in the magnitude ...

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  17. How will you distinguish between the following pairs of terms? a. He...

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  18. How many lattice points are there in one unit cell of each of the foll...

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  19. Explain a. The basic of sumilarities and differences between metalli...

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  20. Calculate the efficiency of packing in case of a metal crystal for a...

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