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Q1. The following figure is the basic unit of Silicon (a is the length of the...
Use foam balls and toothpicks to create a space-filling model of a simple cubic unit cell....
Use foam balls and toothpicks to create a space-filling model of a simple cubic unit cell. The surfaces of the balls should be touching. On the cube above, draw a cut- away view showing only the atoms (or parts of atoms) inside one unit cell. Pay particular attention to where atoms touch (or not). One atom has been drawn in for you as an example. Number of atoms per unit cell - Coordination number (number of nearest neighbors)- Co A...
cubic unit cell length of a side of the cubic UNIT CELL CUBICS MODE 1/8 of...
cubic unit cell length of a side of the cubic UNIT CELL CUBICS MODE 1/8 of an atom remetallic radius of an atom Primitive Cubic The ma ching ang antage = ven Face-Centered Cubic (aka Cubic Close-Packed) The atoms are touching along a face diagonal 1/8 of an atom 1/2 of an atom of an atom Body-Centered Cubic The atoms are touching along a body diagonal. 1/8 of an atom whole atom KEY QUESTIONS What are the names of the...
of the cubic unit Cell UNIT CEL CURICS KEY 1. W MODEL a length of a...
of the cubic unit Cell UNIT CEL CURICS KEY 1. W MODEL a length of a side of the remete radius of an atom Primitive Cubic 2. W its The aims a fouching ang anaye Face-Centered Cubic (aka Cubic Close-Packed) The atoms are touching along a face diagonal 1/8 of an atom Body-Centered Cubic The atoms are fouching along a body diagonal 1/8 of an atom whole atom Chapter 11: Phases of Matter KEY QUESTIONS 1. What are the nar...
Unit Cell Calculations Name _____________________________ Unit Cells: The Simplest Repeating Unit in a Crystal The structure...
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Unit Cell Calculations Name
_____________________________
Unit Cells: The Simplest Repeating Unit in a Crystal
The structure of solids can be described as if they were
three-dimensional analogs of a piece of wallpaper. Wallpaper has a
regular repeating design that extends from one edge to the other.
Crystals have a similar repeating design, but in this case the
design extends in three dimensions from one edge of the solid to
the other. We can unambiguously describe a piece of wallpaper by...
A unit cube as shown in Figure Q1 is undergoing the transformations described in (i) and...
A unit cube as shown in Figure Q1 is undergoing the transformations described in (i) and (ii) respectively. Sketch the resultant object with coordinates of each vertex after each transformation. (a) Z (0,1,1) (1,1,1) (0,0,1) (1,0,1) (0,0,0) (1,1,0) (1,0,0) Figure Q1 Transformation (i) (6 marks) 1. A Uniform scale by a factor of 2 2. Followed by a rotation about the-axis in counter-clockwise direction by 90 degrees 3. Followed by a transformation moving in the direction of < 2, 1,...
Q. 3. Potassium fluoride adopts the rock salt (NaCl type) structure, with a density of 2.48...
Q. 3. Potassium fluoride adopts the rock salt (NaCl type) structure, with a density of 2.48 g/cm3. Using the data for the Part 4 model you constructed, calculate the expected distance between the center of the potassium ion and the center of an adjacent fluoride ion in pm. Q. 4. The diameter of a Cs+ ion is 334 pm; the diameter of a Br- ion is 392 pm. For CsBr, which crystallizes in the CsCl type structure from Part 5,...
1.1 A/an ____________ unit cell has Edge length = A) Simple Cubic B) BCC C) FCC...
1.1
A/an ____________ unit cell has Edge length =
A) Simple Cubic
B) BCC
C) FCC
1.2
Which method provides the average distances between planes of
atoms in a solid?
A) stoichiometric analysis
B) differential scanning calorimetry
C) X-ray diffraction
D) high pressure liquid chromatography
E) mass spectrometry
1.3
There are ______ atoms contained within a FCC unit cell.
A) 2
B) 1
C) 4
D) 3
1.4
Polyvinyl chloride is an example of which type of polymer?
A) polyester...
+ Q1. Two small beads having positive charges 39 and q are fixed at the opposite...
+ Q1. Two small beads having positive charges 39 and q are fixed at the opposite ends of a horizontal, insulating rod, extending from the origin to the point x = d. As shown in figure, a third small charged bead is free to slide on the rod. At what position is the third bead in equilibrium? Can it be in stable equilibrium? Q2. A small, 2.00-g plastic ball is suspended by a 20.0-cm-long string in a uniform electric field...
Question 1 2 pts Alan unit cell has Edge length 4r./1 O FCC Simple Cubic О...
Question 1 2 pts Alan unit cell has Edge length 4r./1 O FCC Simple Cubic О ВСС Question 2 2 pts Which method provides the average distances between planes of atoms in a solid? O mass spectrometry O differential scanning calorimetry O X-ray diffraction O stoichiometric analysis O high pressure liquid chromatography Question 3 2 pts There are atoms contained within a FCC unit cell. O 1 04 3 O 2 Question 4 2 pts Polyvinyl chloride is an example...
EENG 245 Physical electronics HW 1 1) The NaCl crystal is cubic, and can be described...
EENG 245 Physical electronics HW 1 1) The NaCl crystal is cubic, and can be described as follows. Na atoms sit at the corners and faces of a cube, and Cl atoms sit in between two Na atoms. This means that a Clatom is found half-way along each of the cube edges, and there is a Cl in the center of the cube. (We could also have described the lattice by interchanging Na and Cl in the description above.) Another...
Use foam balls and toothpicks to create a space-filling model of a simple cubic unit cell. The surfaces of the balls should be touching. On the cube above, draw a cut- away view showing only the atoms (or parts of atoms) inside one unit cell. Pay particular attention to where atoms touch (or not). One atom has been drawn in for you as an example. Number of atoms per unit cell - Coordination number (number of nearest neighbors)- Co A...
cubic unit cell length of a side of the cubic UNIT CELL CUBICS MODE 1/8 of an atom remetallic radius of an atom Primitive Cubic The ma ching ang antage = ven Face-Centered Cubic (aka Cubic Close-Packed) The atoms are touching along a face diagonal 1/8 of an atom 1/2 of an atom of an atom Body-Centered Cubic The atoms are touching along a body diagonal. 1/8 of an atom whole atom KEY QUESTIONS What are the names of the...
of the cubic unit Cell UNIT CEL CURICS KEY 1. W MODEL a length of a side of the remete radius of an atom Primitive Cubic 2. W its The aims a fouching ang anaye Face-Centered Cubic (aka Cubic Close-Packed) The atoms are touching along a face diagonal 1/8 of an atom Body-Centered Cubic The atoms are fouching along a body diagonal 1/8 of an atom whole atom Chapter 11: Phases of Matter KEY QUESTIONS 1. What are the nar...
A unit cube as shown in Figure Q1 is undergoing the transformations described in (i) and (ii) respectively. Sketch the resultant object with coordinates of each vertex after each transformation. (a) Z (0,1,1) (1,1,1) (0,0,1) (1,0,1) (0,0,0) (1,1,0) (1,0,0) Figure Q1 Transformation (i) (6 marks) 1. A Uniform scale by a factor of 2 2. Followed by a rotation about the-axis in counter-clockwise direction by 90 degrees 3. Followed by a transformation moving in the direction of < 2, 1,...
1.1
A/an ____________ unit cell has Edge length =
A) Simple Cubic
B) BCC
C) FCC
1.2
Which method provides the average distances between planes of
atoms in a solid?
A) stoichiometric analysis
B) differential scanning calorimetry
C) X-ray diffraction
D) high pressure liquid chromatography
E) mass spectrometry
1.3
There are ______ atoms contained within a FCC unit cell.
A) 2
B) 1
C) 4
D) 3
1.4
Polyvinyl chloride is an example of which type of polymer?
A) polyester...
+ Q1. Two small beads having positive charges 39 and q are fixed at the opposite ends of a horizontal, insulating rod, extending from the origin to the point x = d. As shown in figure, a third small charged bead is free to slide on the rod. At what position is the third bead in equilibrium? Can it be in stable equilibrium? Q2. A small, 2.00-g plastic ball is suspended by a 20.0-cm-long string in a uniform electric field...
Question 1 2 pts Alan unit cell has Edge length 4r./1 O FCC Simple Cubic О ВСС Question 2 2 pts Which method provides the average distances between planes of atoms in a solid? O mass spectrometry O differential scanning calorimetry O X-ray diffraction O stoichiometric analysis O high pressure liquid chromatography Question 3 2 pts There are atoms contained within a FCC unit cell. O 1 04 3 O 2 Question 4 2 pts Polyvinyl chloride is an example...
EENG 245 Physical electronics HW 1 1) The NaCl crystal is cubic, and can be described as follows. Na atoms sit at the corners and faces of a cube, and Cl atoms sit in between two Na atoms. This means that a Clatom is found half-way along each of the cube edges, and there is a Cl in the center of the cube. (We could also have described the lattice by interchanging Na and Cl in the description above.) Another...
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