Explain why diamond is harder than graphite and why is graphite an electrical conduct but diamond is not?

Q: Write a comparison between : 1- Metal with ceramic 2- Metal with polymer 3- Metal with nanomaterial

A: The differences are as follows:

Q: (a) What change occurs when AgCl is doped with CdCl2?(b) What type of semiconductor is produced when…

A: The small gap in valance band and conduction band in semiconductors lead to jumping of electrons…

Q: Define the following:(i) F-centre (ii) p-type semiconductor(iii) Ferrimagnetism.

A: (i) In crystals, there exists some defects one of which is anion vacancy defect, an F-center is…

Q: What type of a material would have a small forbidden band gap ? alkaline earth metal metal…

A: The answer to the given question is as follows------- The forbidden band gap is the difference…

Q: Choose the options that would form a p-type semiconductor.  Choose all that would make a p-type…

A: When a trivalent element impurity (less valent) dopped with tetravalent (or more valent)…

Q: In the process of doping a semiconductor, certain impurities are added to increase the electrical…

A:

Q: Which unit cell has the greater packing efficiency, simple cubic or body-centered cubic ?

A:

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: Explain why diamond is harder than graphite. Why is graphite an electrical conductor but diamond is…

A: We know that both diamond and graphite are made of carbon. However, diamond is harder than graphite…

Q: calculate the density of each of the following metals from the information given; (a) Aluminum…

A:

Q: Carbon forms a number of allotropes, two of which are graphite and diamond. Silicon has a diamond…

A: Graphite is an allotrope of carbon which is made up of hexagonal carbon rings in which each carbon…

Q: Explain how Zincblende structure is different than Face Centered Cubic Structure.

A: In zinc blende , sulphide ion form FCC lattice and zinc ion is present at alternate tetrahedral site…

Q: Classify each of the following as a conductor, insulator, or semiconductor: (a) phosphorus; (b)…

A: The given element has to be classified as conductor, insulator, or semiconductor.

Q: Describe the crystal structure of Pt, which crystallizes with four equivalent metal atoms in a cubic…

A: The platinum crystal consists of face-centered cubic arrangement. The unit cell consists of atoms of…

Q: Which substance has the greatest band gap?a) silicon b) germaniumc) lead d) gold

A:

Q: What is the difference between hexagonal and cubic closest packed structures? Which one has a face…

A: The smallest repeating unit with full symmetry of crystal structure is known as unit cell.

Q: Use the hybridization and structures of graphite and diamond to explain why graphite conducts…

A: The objective of the question is to explain the reason behind the good electrical conductivity of…

Q: which variables must be controlled and in what manner to produce diamond from graphite?

A: Graphite and diamond are completely made up of carbon, in-fact are referred as allotropes of carbon…

Q: Which of the following elements, if doped into silicon, would yield an n-type semiconductor: Ga, As,…

A: N-type semiconductors are conductors that are formed by doping (process of adding impurity atoms to…

Q: what is the density of this metal in g/cm3?

A: For a unit cell- Density = [Z * Molar Mass] / [(Unit cell edge in cm)^3* 6.022*10^23] g/cm^3 Z = No…

Q: FCC

A:

Q: Calculate the density of each of the following metals from the data given: (a) aluminum, fcc…

A: Given: (a) fcc structure and atomic radius of 143 pm. (b) bcc structure and atomic radius of 227 pm.

Q: Name the two most important allotropes of sulphur. Which one of the two is stable at room…

A: The two most important allotropes of sulfur are given below, That is, Rhombic form and Monoclinic…

Q: Which of these element would convert pure silicon into a n-type semiconductor upon doping? a.…

A: n-type semiconductor is a type of extrinsic semiconductor in which pure semiconductor material such…

Q: Nickel, Ni, has a face-centered cubic structure with an edge length of 352 pm. What is the density…

A: The density of fcc unit cell of nickel is calculated in step two.

Q: 4. Briefly discuss how the different types of doping (n-type and p-type) increases the conductivity…

A: Solution:       A semiconductor is a type of material that conducts electricity but not all…

Q: Is arsenic-doped germanium a p-type or n-type semiconductor?

A: The trivalent impurity atoms such as indium, gallium are doped with an intrinsic semiconductor, then…

Q: Show how the fluorite structure accommodates a cation-to-anion ratio of 1:2.

A: Structure of fluorite  is,                                                 Blue color balls are…

Q: What is the difference between an n-type semiconductor and a p-type semiconductor?

A:

Q: Indicate if each solid forms an n-type or a p-type semiconductor.a. germanium doped with galliumb.…

A: In the periodic table: Germanium belong to IVA group. So it has four valence electrons. Gallium…

Q: Explain why graphite can conduct electricity, but diamond does not.

A: The reason is as follows,

Q: Lithium SiO2, similar to Diamond Germanium KCI **

A: Here we will discuss the electrical properties of conductors, insulators and semiconductors based on…

Q: Which statement explains why graphite is used as a lubricant? * O A All bonds between the atoms are…

A: Graphite is used as a lubricant. Give reason.

Q: Classify each of the following as a conductor, insulator, or semiconductor: (a) carbon (graphite);…

A: Conductors are those that allow the charge to pass through them while insulators don't allow the…

Q: Silicon carbide (SiC) is an example of what type of solid? molecular covalent network ionic…

A: We have to find out nature silicon carbide

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: List three differences and two similarities between diamond and graphite

A: Similalities between Diamond and Graphite are,1. Both are allotropes of carbon2. Both are…

Q: 3. a) Calculate the atomic packing factor for the face-centered cubic (FCC) crystal structure.

A:

Q: What type of semiconductor is obtained when silicon is doped with arsenic?

A: Silicon belongs to group 14. It has atomic number 14 and has 4 valence e-. Arsenic belongs to group…

Q: Draw the atomic structure of a unit cell of the following materials (a) Copper (b) Tungsten (c)…

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Q: Is gallium-doped germanium a p-type or n-type semiconductor?

A: Gallium-doped germanium is a p-type semiconductor.

Q: An oxide of rhenium crystallizes with the unit cell shown here (rhenium =gray; oxygen = red). What…

A: As shown in figure, Re is present at corners and O is present at edge center. Number of Re atoms in…

Q: What is the difference between tetrahedral and octahedral voids?

A: The difference between tetrahedral and octahedral voids can be shown in below

Q: What is the energy gap in band theory? Compare its size in superconductors, conductors,…

A: The lower occupied molecular orbital is known as valence band and higher unoccupied molecular…

Q: Please help me answer the question and kindly show the detailed solution. Thank you! *Magnesium…

A: The density of solid crystalline magnesium has to be calculated.