Please correct answer and don't use hand raiting 6. (a) In the pattern of dots please sketch the primitive unit cell andthe centered, higher symmetry unit cell.(b) Write down the unit cell parameter(s) (a, b, c, a, ẞ, y) needed todescribecell choice fromthenon-primitive(a).7. In the pattern below sketch the unit cell and circle the asymmetric unit. Is the unit cell primitive orcentered?2

Question 6 part aPrimitive unit cell:Centered, sigher symmetry unit cell:Question 7To identify the…

Answered: 6. (a) In the pattern of dots please…

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter21: The Solid State: Crystals

Section: Chapter Questions

Problem 21.28E

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Similar questions

What is the coordination number of Cs in CsCl? of Na in NaCl? of Zn2 in ZnS?
Sketch the following planes and directions within a cubic unit cell
4.50 Sketch the atomic packing of (a) the (100) plane for the BCC crystal structure, and (b) the (201) plane for the FCC crystal structure (similar to Figures 4.206 and 4.216).
7. A mineral composed of Sr, O, and Ti, has the cubic unit cell shown in the drawing. The oxygens are on the faces of the unit cell. (a) What is the empirical formula of this mineral? (b) How many oxygens are 車 Strontium O Oxygen Titanium coordinated to titanium? (c) To see the full coordination environment of the other ions, we have to consider neighboring unit cells. How many oxygens are coordinated to strontium?
(a) The density of diamond is 3.5 g/cm3, and that ofgraphite is 2.3 g/cm3. Based on the structure of buckminsterfullerene,what would you expect its density to berelative to these other forms of carbon? (b) X-ray diffractionstudies of buckminsterfullerene show that it has aface-centered cubic lattice of C60 molecules. The length ofan edge of the unit cell is 14.2 Å. Calculate the density ofbuckminsterfullerene.
9. For a two dimensional lattice with, a1= a a2= a/2 P- T1/3 (a) what is the area of a primitive cell? (b) show that the lattice is a rectangular lattice? (c) draw the Wigner-Seitz cell of this lattice and show that the area of the Wigner-Seitz cell is the same as in (a).
3.60 (a) What are the direction indices for a vec- 231 in a 342 11 tor that passes from point 10 to point 32 tetragonal unit cell? (b) Repeat part (a) for a rhombohedral unit cell.
In a certain unit cell. planes cut through the crystal axesat (2a. 3b. c). (a. b. c). (6a. 3b. 3c). (2a. -3b. -3c). Identify theM iller indices of the planes.
2.) A newly designed superconductor material has 3 different types of atoms in its molecular formula and has a crystal structural similar to diamond cubic with an additional atom at the body-center (like BCC). Atom A orients on the 8 vertices of the cubic lattice and at the body center. Atom B orients at the center of each face. Atom C orients at 4 tetrahedral sites residing entirely within the cubic lattice. Each cubic crystal lattice has precisely the number of atoms that matches the molecular stoichiometry: AxByCz. What is the stoichiometry of this material?
Please explain briefly.
What is the answer
Indicate the planes (a) (100), (b) (134), and (c) (102) within a unit cell

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