Non-crystalline ceramics deform by -

Q: - Determine the coordination number for each structure. a. Gold

A: Gold crystallizes in fcc unit cell. FCC stands for the face-centered cubic unit cell. In this unit…

Q: The lattice constant of a face-centered-cubic structure is 4.75 Å. Determine the vol- ume density of…

A: Since you have posted multiple questions, we will solve first one for you. To get remaining…

Q: the angle between crystal faces is controlled by?  A. Unit Cell  B. Space lattice  C. Lattice point…

A: The angle made between consecutive crystal faces are called intetfacial angles, there are also…

Q: For each of the following crystalline solids, determine the number of atoms (or ions) per unit cell…

A: (a) PbS : Number of S2- ions per unit cell = 4  Number of Pb2+ ions per unit cell = 4 Coordination…

Q: a) How many carbon atoms are there per unit cell? b) What is the coordination number for each carbon…

A: (a) number of carbon atom per unit cell (b) coordination number of each carbon atom

Q: The molar volume (that is, the total volume divided by the number of moles) of a certain form of…

A: Given, molar volume of solid lead =18 cm3/mol

Q: coordination numbe unit cell: crystalline solid:

A: coordination no. is a no. of atoms or ions surrounding an atom or ion in a crystal lattice i.e. only…

Q: What is defined as the number of atoms surrounding an atom in a crystal lattice and indicates how…

A: Given statement is :  What is defined as the number of atoms surrounding an atom in a crystal…

Q: All of the following statements concerning London dispersion forces are correct EXCEPT

A: Option a

Q: Quartz glass is the only industrially utilized single component glass. Which one of the following is…

A: Quartz is one of the most useful natural materials. It is very durable and is chemically inert in…

Q: Glass is:  A supercooled liquid whose viscosity is so high is behaves like a solid  A solid…

A: When we observe very old glass windows ( 50 years, 100 years old), we will observe that there is a…

Q: he packing efficiency (in

A:

Q: How can we describe a single-phase material?

A: Single phase material is the material contains only one phase .

Q: Explain in simplest terms the coordination number of face-centered cubic unit cell

A:

Q: During the glass manufacturing process, the liquid must be cooled relatively quickly to form the…

A:

Q: Define crystal lattice and unit cell.

A: Lattice is a collection of lattice points that are arranged in a periodic pattern so that the…

Q: The presence of __________ in motor oils allows them to have temperature-dependent viscosities.

A: Dry lubricante such as graphite, molybdenum disulfide and tungsten disulfide allow them to have…

Q: Molecules in this type of crystal are held by dipole-dipole, dispersion and hydrogen bonding they…

A: We know that molecular solids are made up of atoms or molecules held together by London dispersion…

Q: A small portion of a crystal lattice is sketched below. What is the name of this unit cell? Your…

A: Given, the structure of the unit cell: We have to name this unit cell.

Q: What is packing fraction ?

A: A way of expressing the variation of isotopic mass from whole mass number (atomic mass) is defined…

Q: What kind of crystalline solid is graphite?   A) Metallic B) Ionic C) Molecular D) Covalent- network

A: Graphite is a covalent-network type of crystalline solid. because in Graphite each carbon atom…

Q: a- Determine and draw the plans of following Miller indices of cubic unit cell through X,Y and Z…

A: Please find your solution below : Miller Indices are used to specify the directions and planes. The…

Q: Classify the solids as ionic, molecular, metallic, or covalent. Note that covalent compounds are…

A: Ionic Solids are bad Conductor in Solid State and good Conductor in the Liquid State eg: Nacl ,Kcl…

Q: One major difference between crystalline and amorphous solids is that Select one: amorphous solids…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: It is near impossible to form metals with amorphous microstructure. True False "In a single simple…

A: a). false explain: Amorphous Metal (bulk metallic glass) provide an alternative at the most basic…

Q: Identify solid as molecular, ionic, or atomic.Ni(s)

A: Molecular solids are those in which atoms or molecules are held together by comparably weaker…

Q: Define the following?(i) Crystalline solids (i) Frenkel defects (iii) n-type semiconductor.

A: Solids are made of pure elements or a different variety of compounds. These are hard structures with…

Q: Which arrangement of atoms in a lattice representsclose-packing? (Section 12.3)

A: The first arrangement represents hexagonal close packing (ABABA...type arrangement). The…

Q: What kinds of attractive forces exist between particles (atoms, molecules, ions) in molecular…

A: Intermolecular forces are the forces of attraction or repulsion which act between neighboring…

Q: Name the crystal defect which lowers the density of an ionic crystal.

A: Solids are made up of crystals. Defects are defined as the irregularities in the arrangement of…

Q: Determine the liquidus temperature, soli- dus temperature, and freezing range for the following…

A: Solution - According to the question - Given -

Q: Consider a crystal of aluminum, which has a face centered cubic structure shown below. The distance…

A: Given: Edge length = 0.404 nm

Q: Identify solid as molecular, ionic, or atomic. I2(s)

A: Solid is also one of the four primary states of the matter. The molecules in the solid are tightly…

Q: Identify solid as molecular, ionic, or atomic. Ar(s)

A: The solids which are composed of molecules that are held together by Van der Waals forces are called…

Q: Why are metals ductile and ceramics not? Explain

A: The metals are shiny, opaque, and heat and electricity conductor. However, ceramics are inorganic…

Q: Lithium selenide can be described as a closest-packed array of selenide ions with lithium ions in…

A: Given information: Lithium selenide

Q: Silver chloride packs in a crystalline lattice (shown). The silver ions are the darker spheres in…

A: Silver ion = darker spheres Chloride ion = not darker spheres

Q: Of the following, ________ is endothermic. Group of answer choices condensation all these processes…

A: Condensation , deposition and crystallization is exothermic process.

Q: the thin structure that surrounds a cell is known a

A: The structural and functional unit of life that is the basic unit of an organism is termed the…

Q: This refers to the cubic cell type whose layer arrangement is ABABABABA ....

A: In solids, constituents particles are closely spaced.

Q: Simple cubic a - R relationship Number of atoms/cell APF Coordination Number

A:

Q: on the properties listed in each item. NaCI (salt), Pb (lead), SiO, (quartz) SS pility tivity at is…

A: 1 On the basis of Hardness:- Pb < NaCl < SiO2 2 On the basis of mallebiality:- SiO2< NaCl…

Q: Determine the coordination number for an atom in the primitive cubic unit cell.

A: A unit cell is the smallest portion of a crystal which shows the arrangement of atoms in the…

Q: Zinc blende, or sphalerite, can be described as having a face-centered cubic unit cell with sulfur…

A: The number of zinc and sulfur atoms occupy in fcc unit cell is given by

Q: Atomic packing factor is a. Volume fraction of atoms in a unit cell b. Projected area fraction of…

A: Atomic packing factor of any unit cell is defined as the volume of atoms present per unit volume of…

Q: Which arrangement of atoms in a lattice representsclose-packing?

A: The first arrangement represents hexagonal close packing (ABABA...type arrangement). The…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.