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What is the two-dimensional coordination...

What is the two-dimensional coordination number of a molecule in square close-packed layer?

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In the two dimensional square close packed layer, a particular molecule is in contact with four molecules. Hence, the co-ordination number of the molecule is four.
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Three-dimensional close packing in solids is referred to as stacking the second square closed packing exactly above the first. In this tight packing, the spheres are horizontally and vertically correctly balanced. Similarly, we can obtain a simple cubic lattice by adding more layers, one above the other. This can be done in two ways. Three-dimensional close packing from two-dimensional square close-packed layers: By putting the second square closed packing exactly above the first, it is possible to form three-dimensional close packing. In this tight packing, the spheres are horizontally and vertically correctly balanced. Similarly, we can obtain a simple cubic lattice by adding more layers, one above the other.Three-dimensional close packing from two-dimensional hexagonal close-packed layers: With the assistance, of two-dimensional hexagonal packed layers, three-dimensional close packing can be obtained. The coordination number of cubic closed packing is:

Three-dimensional close packing in solids is referred to as stacking the second square closed packing exactly above the first. In this tight packing, the spheres are horizontally and vertically correctly balanced. Similarly, we can obtain a simple cubic lattice by adding more layers, one above the other. This can be done in two ways. Three-dimensional close packing from two-dimensional square close-packed layers: By putting the second square closed packing exactly above the first, it is possible to form three-dimensional close packing. In this tight packing, the spheres are horizontally and vertically correctly balanced. Similarly, we can obtain a simple cubic lattice by adding more layers, one above the other.Three-dimensional close packing from two-dimensional hexagonal close-packed layers: With the assistance, of two-dimensional hexagonal packed layers, three-dimensional close packing can be obtained. The correct statement about zns crystal is:

Three-dimensional close packing in solids is referred to as stacking the second square closed packing exactly above the first. In this tight packing, the spheres are horizontally and vertically correctly balanced. Similarly, we can obtain a simple cubic lattice by adding more layers, one above the other. This can be done in two ways. Three-dimensional close packing from two-dimensional square close-packed layers: By putting the second square closed packing exactly above the first, it is possible to form three-dimensional close packing. In this tight packing, the spheres are horizontally and vertically correctly balanced. Similarly, we can obtain a simple cubic lattice by adding more layers, one above the other.Three-dimensional close packing from two-dimensional hexagonal close-packed layers: With the assistance, of two-dimensional hexagonal packed layers, three-dimensional close packing can be obtained. What will be the ratio of radii of the spheres in cubic systems simple cubic, body centred cubic and face centred cubic systems. if 'a' stands for the edge length.

DINESH PUBLICATION-SOLID STATE-N.C.E.R.T
  1. Distinguish between a. Hexagonal and monoclinic unit cells (b) Fac...

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  2. Explain how much portin of an atom located at (a) corner and (b) body ...

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  3. What is the two-dimensional coordination number of a molecule in squar...

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  4. A compound is formed hexagonal close-packed structure. What is the tot...

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  5. A compound formed by two elements M and N. Element N forms ccp and ato...

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  6. Which of the following lattices has the highest packing efficency (a) ...

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  7. An element with molar mass 2.7 xx 10^(2) kg mol^(-1) forms a 2.7 xx 10...

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  8. What type of defect can arise when a solid is heated? Which physica...

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

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

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

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

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

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

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

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

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

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

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

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

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