Distinguish  between the bond thos exist  In CsCl and SiC Crystals.

Q: Calculate the density of cesium if it crystallizes in the bcc structure with an atomic radius of 272…

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Q: Describe and give examples of the following types of crystals:  (a) molecular crystals, (b) metallic…

A: Crystals are basically solid materials that are arranged in a particular organized way. Both types…

Q: Draw the structures of manganate and permanganate ions and predict their magnetic character.

A: Draw the structures of manganate and permanganate ions and predict their magnetic character.

Q: Consider the following dioxides of fifth-period elements: SnO2, TeO2, and XeO2. (a) Use their common…

A: The penultimate shell in an atom is the second last shell, the largest shell is the valence shell.…

Q: Account for the relative bandgap energies of semiconductors interms of periodic trends?

A: Semiconductors are materials which have a conductivity between conductors (generally metals) and…

Q: What is the trend in the size of the bandgap as you move down the column of the group 4A elements?

A: Band-In molecular orbitals of an atom the set of closely discrete energy levels is called as band.…

Q: Calculate the radius of an iridium atom, given that Ir has an FCC crystal structure, a density of…

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Q: How Band theory differentiate between semiconductors and semi materials?

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Q: 7 Under what conditions can liquid nitrogen be formed by

A: we know,the critical temperature [Tc] is the maximum temperature at which the molecules can exist as…

Q: What are Oxide Ceramics? Give some examples?

A: INTRODUCTION: Oxide ceramics are the ceramics that are non-metallic mineral materials.

Q: Explain why the atomic structure of diamond is different from the atomic structure of graphite?

A: it has a crystalline lattice each carbon in diamond is SP3 hybridized and attached with other Carbon…

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 contolled and in what manner to produce Diamond from Graphite?

A: Carbon exists in three forms as follows: Graphite Diamond Fullerene Diamond is the hardest form of…

Q: Use the Born-Mayer equation to estimate the lattice enthalpy of calcium sulfide, CaS. The crystal…

A: Given data: The distance between the centers of nearest neighbours (sum of ionic radii r0) = 284 pm…

Q: Is interatomic bonding in ceramics always ionic? Or is that false?

A: Ceramics : These are very brittle , corrosion resistant material made from inorganic non metallic…

Q: Define the term, Band-Gap?

A: Electrons are present in the orbits around the nucleus. On coming together of two charges together…

Q: The thermal and mechanical processing of materials is an important step in ensuring that they have…

A: (a) Given: Metallic element undergoes a phase transition in which the crystal structure changes from…

Q: In how many allotropic forms does arsenic exists?

A: Allotropes of an element are forms of the same element with different physical and chemical…

Q: Discuss the following sentences: 7- The role of PbO in glass.

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Q: Which would you expect to be the more ductile element,(a) Ag or Mo, (b) Zn or Si? In each case…

A: Silver is a more ductile element than molybdenum. Ag has more valence electrons which makes the…

Q: What is the trend in the size of the band gap as you move down the column of the group 4A elements?

A: Band-In molecular orbitals of an atom the set of closely discrete energy levels is called as band.…

Q: Explain the phase diagram of CaO-MgO.

A: we have to discuss the phase diagram of CaO - MgO.

Q: Illustrate the  Relationship among Boiling Points, Dipole Moments,and Polarizability of Some Binary…

A: To illustrate the relationship between the boiling points, dipole moments, and polarizability of…

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: Describe the process of doping and explain how it alters the atomic structure of silicon.

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Q: <p>Explain why the graphite structure of carbon allows graphite to be used as a lubricant, but…

A: In graphite, flat sheets of carbon are connected together in the form of interconnected hexagonal…

Q: What is the type of the crystal structure of the red solid [Co(NH3)SH2O]Cl;? What information about…

A: In the crystals, the constituent atoms/ions have their appropriate arrangement in the lattice…

Q: 3- Calculate the radius of an iridium (IR) atom, given that IR has an FCC crystal structure, a…

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Q: Derive the minimum value of r(cation)/r(anion) to ensure triangular crystal structure in ceramics.

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Q: Crystalline: Diamond ; ____????____ : Graphite

A: Given: Crystalline: Diamond ; ____????____ : Graphite

Q: Why does graphite conduct electricity?

A: Graphite is an allotrope of carbon. It is a covalent solid. It has a trigonal planar geometry. The…

Q: Define an alloy and an amalgam State the main constituents of the following alloys Stainless steel,…

A: Alloy : Alloy is a homogeneous mixture of two or more metals. Amalgam : Amalgam is an alloy of metal…

Q: Which allotropic form of carbon are conductor and which are non conductor's and why?

A: Allotropy is defined as the property of some chemical elements to exist in two or more different…

Q: Define the term Ceramics?

A: Ceramics are widely used materials these days. They can be used in a variety of ways. Initially, the…

Q: Discuss the dependence of strength on temperature for metals, ceramics and polymers from the…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: LiH crystallizes with the same structure as NaCl. Given the ionic radii and the molar mass of Li+ (…

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Q: How many molecular orbitals are present in the valence band of a sodium crystal with a mass of 5.45…

A: The number of sodium atom in a sodium crystal with a mass of 5.45 g is calculated as shown below.…

Q: What are the various phases of SiO2?

A: The objective of the question is to write the various phases of SiO2.

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: Which of the following elements reacts with sulfur to form a solid in which the sulfur atoms form a…

A: The following elements react with sulfur to form a solid in which the sulfur atoms form a closest…

Q: Why is graphite soft lubricant and good conductor of electricity?

A: Graphite is a non metal having two dimensional sheet like structure where each carbon atom uses sp2…

Q: the theoretical density in g/cm^3

A: The required solution is as follows:

Q: Draw a Lewis electron-dot diagram for the cyclosilicate ion (Si,O), which forms part of the…

A: In the Si6O1812- molecule, the oxygen ring present in the center of the unit. Here all oxygen atoms…

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

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