Do non-crystalline material display the phenomenon of allotropy? Why or why not? In your own words

Q: What are the Miller indices for the plane shown below? y

A: In the given figure, the x axis  intercept is a, the y axis intercept is -b and z axis intercept is…

Q: Q : (i) Prove that the atomic packing factor (APF) for the BCC crystal structure is 0.68. (ii) Prove…

A:

Q: The atomic packing factor for a material with body centred cubic structure is....

A: We can find the answer as below

Q: Which of the following crystal structures are harder and malleable а. FCC

A: Solution:

Q: Determine the packing factor for the FCC cell. In a FCC cell, there are four lattice points per…

A: Packing factor is defined as the ratio of volume of actual number of atoms present in a unit cell to…

Q: The unit of the atomic packing factor APF is: Select one: a. m3 b. Unit less

A: APF is the ratio of effective no of atom's volume to the unit cell volume.

Q: What is experimental stress analysis? Methods used in experimental stress analysis Explain the…

A: Stress Analysis

Q: What is the effect of impact test on the (Fcc) structures ?

A: The application of the impact test is used to determine the amount of energy that can be absorbed in…

Q: Why is it that inorganic glasses form upon relatively slow cooling of melts, while rapid…

A: Glass: it is an amorphous supercooled liquid which is hard and brittle. Glasses are formed by…

Q: According to the hard-sphere model, illustrate with draw figure the contributions of atoms in the…

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Q: Describe the behavior of crystal and amorphous solids when heated

A: Crystalline solids possess a sharper melting point ,ie it melts instantaneously at a fixed…

Q: why vacancy diffusion is more slow than interstitial diffusion?

A: Vacancy diffusion is slower than Interstitial diffusion. Diffusions taking place by vacancies are…

Q: Choose the correct examples of face centered cubic structure in the following options.

A: Ans is Gold and Aluminum.

Q: Prove that the atomic packing factor (APF) for the BCC crystal structure is 0.68.

A:

Q: briefly explain how with the help of x-ray diffraction techniques, the lattice dimensions are…

A: The wavelength of X-ray is very small, they are of the order of the atomic spacing, and because of…

Q: Would you expect superconductivity from a material devoid of crystal structure (a "glass")? If that…

A: A superconductor is portrayed by two highlights: the conduction of electrons with zero electrical…

Q: Factors influence crystal structure for ionic materials    What factors influence crystal…

A: a)Electrostatic attraction binds ions into ionic crystals. Their configuration depends on the size…

Q: Calculate the number of atoms in a 1.9-micron-diameter by 7.3-micron-deep cylinder in a hypothetical…

A:

Q: Of the different crystal systems, how many have at least one angle between adjacent sides to be 90°…

A: The different crystal structurees are Monoclinic Cubic Tetragonal Orthorhombic Rhombohedral…

Q: discuss defects in crystalline structure and discuss two types of point defects indicating their…

A: Given question: Discuss defects in crystalline structure and discuss two types of point defects…

Q: A polypropylene specimen has a mass of 28 kg and density of 1.65x103 kgm-3 . Determine the…

A:

Q: first Brillouin zone (BZ) and draw the first BZ boundary of one dimensional (1D) crystal lattice

A: Brillouin zone is defined as a Wigner-Seitz primitive cell in the reciprocal lattice. The first…

Q: - what is Crystalline? and why study the structure of crystalline solids? - metals are having good…

A: Metals are having good electrical conductivity because metal has excess electrons which are freely…

Q: Illustrate the difference between crystalline structure and amorphous structure using an example

A: Crystalline structure: The structure in which atoms , molecules or ions are arranged in well ordered…

Q: Determine the Miller Index of plane of the given plane in an HCP crystal? (1070) → (10 – 10 ) ►…

A: find the miller index of green plane For Given HCP cystal

Q: Calculate BC, FC and FE Rod forces in the lattice system?

A:

Q: Define the atomic packing factor? Is it equal to all types of cell units?

A: The atomic packing factors are determined by assuming the atoms as rigid spheres. The atomic packing…

Q: What is slip deformation? Why does it only occur in metal and not in ionic solids?

A: Slip deformation: The mechanism of deformation in which one part of a specific crystal slips over…

Q: Calculate the density of Ag with miller indices of (1 0 1)

A: Givensilver ,Agmiller indices 1,0,1

Q: The twin boundaries of FCC and BCC structures are. and respectively. *

A: Annealing twins, most prevalent in Face Centered Cubic (FCC) metals e.g. aluminum, copper, brass…

Q: When examining the atomic layers used to construct the models (i.e., select the HCP and FCC bodies…

A: To find: The more densely packed bodies among HCP or FCC. Explanation: FCC ( Face centered cubic…

Q: In lattice structure explain why their properties differ so greatly even though they are both…

A: The word lattice stand for a group of molecules tends to arrange each units repeatedly at a lattice…

Q: When the lattice is statically determinated? Draw an example and explain

A: a statically determinate system can be defined as a system where, if it is possible to find internal…

Q: WHAT ARE THE DIFFERENT PROPERTIES OF LIQUIDS? WHAT IS CRYSTAL STRUCTURE?

A: GIVEN DATA - TWO QUESTION GIVEN WE HAVE TO ANSWER IT

Q: What is Brillouin zone? Explain its significance.

A: The first Brillouin zone is a uniquely defined primitive cell in reciprocal space in mathematics…

Q: discuss how the crystal structure effect mechanical and electrical and physical and thermal…

A: How the crystal structure effect : Mechanical, Electrical, Physical, Thermal properties.   Crystal…

Q: capacity and lattice vibrations in solids.

A: "Lattice vibration" refers to vibration of atoms with one another within a specified phase. The…

Q: using this graph and explain why the twin boundary energy in the given image in 2D is higher than…

A: Metals, like everything else, are made up of atoms, which are believed to be solid spheres for…

Q: the number of atoms, coordination number and void space of a body

A:

Q: O Equations 7.1a and 7.1b, expressions for Burgers vectors for FCC and BCC crystal structures, are…

A:

Q: Iron (II) oxide (FeO) is a ceramic that has the same crystal structure as NaCI. Given: R(Fe2)= 0.087…

A: Given: R(Fe2+)=0.087 nmR(O2-)=0.132 nmIonic packing factor=Volume of ion per cellvolume of unit…

Q: Show that the atomic packing factor for BCC is 0.68.

A: Atomic packing fraction of Body-centered cubic crystal

Q: Calculate the volume in cubic nanometers of the titanium crystal structure unit cell. Lattice…

A: A titanium crystal will be in the shape HCP (Hexagonal close packed) at room temperature or at…

Q: What is the coordination number for atoms in the HCP structure? How does this compare to the…

A: (1) In the entire crystal, a unit cell is the smallest representation. All crystal lattices are made…

Q: a) Calculate the lattice parameter of this unit cell; Bereken die roosterafmeting van die eenheidsel

A:

Q: Determine the miller indices for the plane given.

A:

The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.