What are the unit chemical formulas of silicate tetrahehras for island silicate structures, ring/chain structures, sheet structures and silicate networks.

Q: Assume that a GaAs semiconductor has a lattice constant a=7.5 Å, and the atoms of Ga and As are hard…

A: According to Bartlbey rules, expert have to attempt only 1 question unless specified so please post…

Q: A sample of an alkali metal that has a BCC unit cell is found to have a mass of 1.000 g and a volume…

A: Given : Mass of alkali metal = 1 g Volume of alkali metal = 1.0298 cm3 Volume of hydrogen = 539.29…

Q: (a)What are intrinsic semiconductors? Give an example.(b) What is the distance between Na+and Cl–…

A: Semiconductors are those substances which have conductivities in between the metals and nonmetals.…

Q: Germanium in silicon will be p-type or  n-type?

A: P-type semiconductors are those semiconductors in which the doping material used is from Boron…

Q: A clay mineral that is frequently used together with or in place of kaolinite is pyrophyllite…

A: The metallic compounds which are found in nature, called as minerals whereas the minerals which can…

Q: (non-ferromagnesian) silicates with the dark (ferromagnesian) silicates and list three minerals…

A: Silicates can be generally divided into  two  light and dark silicates. the dark silicates are also…

Q: Which of the following is not true about the basic building block of silicate minerals? The atoms of…

A: The silicates constitute the most important mineral classes. The fundamental unit in all silicate…

Q: How may the conductivity of an intrinsic semiconductor be increased?

A: The intrinsic semiconductor is a type of semiconductor which is pure semiconductor, which has no…

Q: Discuss the reasons for the observation of dominant covalent bonding (but not ionic bonding) in…

A: The interaction present between the atoms and binds them together is known as the bonding. There are…

Q: You would like to select a material for electrical contacts in an electrical switching device which…

A: The materials that have to be used for electrical contacts in an electrical switching device must…

Q: Copper crystallizes in an fcc structure with unit cells of side 361 pm. (a) Predict the appearance…

A:

Q: How much dopant is present in 107 kgkg of semiconductor with a dopant concentration of 2.00 ppmppm…

A: Given: Mass of semiconductor = 107 Kg. And the concentration of dopant = 2.00 ppm by mass.

Q: What is vitreous silica or fused silica?

A: Silica is silicon dioxide which is hard, brittle and it is used for making glasses.

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

A: The correct option is g : 0.59

Q: Based on its phase diagram, explain the formation of cored structure during the solidification of…

A: A diagram that is used to show the equilibrium conditions between the thermodynamically-distinct…

Q: Name the three (3) unit cells commonly found in metal structures and briefly explain the method of…

A: Unit cell is the repeating unit of a lattice. It has net symmetry that a crystal possesses. Due to…

Q: The structure of bentonite is best described as Select one: a. Negatively charged aluminium silicate…

A:

Q: arsenic is a suitable element for doping a pure semiconductor and convert it into an accept True or…

A: Doping is the process of adding impurities to intrinsic semiconductors to alter their properties.…

Q: What are the applications of superconductors?

A: Superconductivity:The ability of certain metals and their compounds, alloys to conduct the…

Q: How do you find the density of Ca metal based on the unit cell properties

A: To determine the density for Ca unit cell, the type of unit cell has to be identified first. From…

Q: Give some detail on how new ceramics are used in manufacturing and illustrate the processing method.

A: Please find your solution below : In manufacturing, particularly in the chemical and petrochemical…

Q: In the process of doping a semiconductor, certain impuri-ties are added to increase its electrical…

A: In semiconductors, the gap between the valence band (VB), and the conduction band (CB), is small.…

Q: Describe the effect compression testing have on thermal, electrical and physical properties of…

A: Silicon Nitride (Si3 N4 ) is one of the hardest materials used in ceramics. It has a hardness of 8.3…

Q: Using the volume of the unit cell and the number of oxygen atoms in the unit cell, calculate the…

A: The simplest repeating unit in a crystal is called a unit cell. Each unit cell is defined in terms…

Q: Type of silicate mineral Anion Formula Do not include OH- Anion Charge  (If it is 0 then make…

A: A silicate is any member of a family of anions consisting of silicon and oxygen, usually with the…

Q: Identify the structure of each of the two-unit cells shown in Problem 47 as the rock salt structure,…

A:

Q: What is the difference between the hardening process of Portland ce-ment and the hardening process…

A: The major components of Portland cement include Silica, SiO2 and limestone, CaCO3. It also consists…

Q: Calculate the IPF (ionic packing factor) for UO2, which has the fluorite (CaF2) structure…

A:

Q: The nitride ceramics AIN, GaN, and InN are all semiconductors used in the microelectronics industry.…

A:

Q: which of the following minerals would crystallize early from a cooling silicate magma ? biotite,…

A: Sequence of minerals crystallizing from magma is called Bowen reaction series.

Q: Which of the following is not true about the basic building block of silicate minerals?     (2 نقطة)…

A: Silicates are metal derivatives of silicic acid and can be obtained by using metal oxides or metal…

Q: What is the difference between SiO2 that is cooled slowly and SiO2  that is cooled quickly?

A: The rate of cooling has direct connections with the amount of crystallization. Slow cooling gives…

Q: Sketch [0110] and [2243] in an HCP unit cell.

A: Solution: We will draw a hexagonal unit cell with ruled co-ordinate system as follows: Point O is…

Q: Describe the difference between vitreous silica and soda-lime glass. What are some advantages and…

A: Vitreous silica is made from silica which is converted to glass. Soda lime in addition of silica…

Q: Sketch the electronic band structure of a semiconducting material, and give an example for an…

A: Semiconductors  The conductivity of semiconductors lies between conductors and insulators. The…

Q: What are Non=Oxide-Ceramic? Give some examples?

A: Non-Oxide Ceramic Non-oxide ceramics are specialized Ceramics that are classed as inorganic,…

Q: What is the main component of glass?a) Al2O3 b) SiO2 c) CaF2 d) SiC

A:

Q: Limestone containing 89% CaCO3 and 11% Si02 is to be used as a flux in a process that forms a slag…

A: Given:Percentage of Calcium carbonate = 89%.Percentage of silica = 11%.Composition of slag is…

Q: Which of the following statements regarding soda glass is incorrect? The modifying cations break…

A: Solution : There are different types of glasses as given below : 1)Soda-lime or soft glass…

Q: How many lattice atoms surround a tetrahedral hole and an octahedral hole in a closest-packed…

A: Lattice atoms in tetrahedral holes:Tetrahedral holes in a closest packed structure represent that…

Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.