what is zinc blende atom packaging factor?
Using the unit cell for Zinc Blende (Figure 12.16), whatis the atom ratio of Zn to S Zinc blende (ZnS) O A 4:4 о с 3:5
3. Zinc Blende and Wurtzite (ZnS) a. What is the unit cell defined by the sulfide ions in zinc blende? b. What close packed structure is defined by the sulfide ions? c. How sulfide ions are close to one zinc ion? d. What is the unit cell defined by sulfide ions in wurtzite?
Question 1: Crystal Lattices Hexagonal Close Packed (HCP) Cubic Close Packed (CCP) Sodium Chloride Zinc Blende Wurtzite a) Draw the structures of all close packing and ionic lattices above. b) Identify the presence of octahedral and tetrahedral holes between layers. How many of each type of "hole" surround each atom in the lattice? c) Identify the layers of each structure in the drawings. d) Write an account of close packed lattice structures. e) Note the similarities and differences between Hexagonal...
Would you expect UO2 to have the sodium chloride, zinc blende, or fluorite structure? Justify your choice. Based on your answer, determine (a) the lattice parameter, (b) the density, and (c) the packing factor. 9. 4
Would you expect UO2 to have the sodium chloride, zinc blende, or fluorite structure? Justify your choice. Based on your answer, determine (a) the lattice parameter, (b) the density, and (c) the packing factor. 9. 4
Paper overlay C C. Zinc Blende, ZnS Use the plastic black template marked phere on a metal get the pink sphere e firmly. Note that It takes a little patience to build this structure. Rather than placing a small pink sphere on rod, you are balancing it in one of the vacancies of the lattice. Have faith, if you get the nint in the correct location it will not fall out, the colorless spheres will hold it in place firmly....
3. A certain form of silver iodide adopts the zinc blende structure. The density of the salt is 5.69 g/cm. Calculate the length of a side of the unit cell. Calculate an approximate distance between the silver cations and iodide anions in the structure. (You can approximate the location of the silver ion because it resides in a pocket 4 of the way down the body diagonal.) 3
Use Slater's rules to estimate Zeff for the nickel, copper, zinc and gallium atom
1 Calculate the E factor and the atom economy of this reaction OH OH H20 H202 OH dH C-C-C=c-MICC E factor Atom economy
2. Calculate the atomic packing factor of the zinc blend (ZnS) crystal structure. The ZnS unit cell is shown below. (14 marks) The ionic radii of Zn?" and S. are 0.060 and 0.174 nm, respectively, On Os