Clausthalite is a mineral composed of lead(II) selenide. The mineral adopts a NaCl octahedral-type structure. If the density of PbSe is 8.27 g/cm', calculate the radius of the lead(II) ion. (The radius of selenide ion is given below.)

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

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Q: Which of the following alloys does not contain copper?           (A) Bronze          (B) Pewter…

A: Bronze = copper + tin  Pewter = Tin + antimony + copper  Sterling silver = silver + usually copper

Q: 5. The elements Cu, O, La, Y, Ba, TI, and Bi are all found in high-temperature ceramic…

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Q: 2. Calculate the radius ratio of ZnO and AgI using the ionic radius values below. Predict what kind…

A: The radius ratio is calculated by the formula, Radius ratio=Ionic radius of cationIonic radius of…

Q: Which of the following structure is more brittle? O a. Hexagonal closed pack structure O b.…

A: Applying concept of packing and molecular arrangements of hcp , bcc and fcc.

Q: Niobium has an atomic radius of 0.1430 nm and a density of 8.57 g/cc. What is the crystal structure…

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Q: Some oxide superconductors adopt a crystal structure similar to that of perovskite (CaTiO3). The…

A: Ti4+ ion in each corner = 18×8 =1 Ca2+ ion in the body center = 1 O2- ions at the midpoint of each…

Q: Which element is a liquid at 758 K and standard pressure? A) Gold B) Silver C) Platinum D) thallium

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Q: Th e elements Cu, O, La, Y, Ba, Tl, and Bi are all found in high-temperature ceramic…

A: The atomic number of Cu is 29. hence the below shorthand noble gas configuration of Cu ( note : Cu…

Q: Iron (atomic radius = 124 pm) crystallizes in a body-centered structure.  Calculate the density of…

A: In a  body-centered structure, atoms are present on all corners and body centre only. And since each…

Q: Would you expect the alloy PdB0.15 to be a substitutional alloy or an interstitial alloy?

A: Please find below the pic to understand the difference between  a substitutional alloy and an…

Q: Define the term body-centered cubic lattice?

A: Lattice is a part of crystal, which is a 3D arrangement of atoms, molecules, or ions. Furthermore,…

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A: Introduction: The structure in which atoms, ions or molecules are arranged in a particular repeating…

Q: Estimate the length of the unit cell edge, a, from the atomic radius of Aluminum (1.43 Å).

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Q: Calculate the atomic radius of Chromium (Cr), given that it has a body-centred cubic (BCC) crystal…

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Q: Which compound is most likely to crystallize in the fluorite structure?a) BaCl2 b) MgO c) K2S d) LiF

A: Correct answer is (a) BaCl2 . BaCl2 structure is similar to fluorite structure, in which cations…

Q: What are Oxide Ceramics? Give some examples?

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

Q: A common feature in high-temperature ceramic superconductors is a Cu-0 sheet that serves as a…

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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.

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A: FCC structure means face centered cubic arrangement, here total 4 atoms used to present in a

Q: An element has a density of 10.25 g/cm3 and a metallic radius of 136.3 pm. The metal crystallizes in…

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Q: An AX ceramic compound has an HCP crystal structure. If the radii of the A and X ions are 0.12 and…

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Q: An element crystallizes in a body-centered cubic (BCC) unit cell (which contains two atoms per unit…

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Q: Define the term Cubic Crystalline Lattices?

A: A lattice is an ordered array of points describing the arrangement of particles that form a crystal.…

Q: A 21.64 g sample of a nonreactive metal is placed in a flask containing 12.00 mL of water; the final…

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Q: A hypothetical metal, which is a single crystal and made up of one chemical element, has an FCC…

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Q: For each of the following alloy compositions, indicatewhether you would expect it to be a…

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Q: Copper had the most essential industrial applications of the three coinage metals [Group 1B(11). It…

A: Given : Lattice structure of copper = FCC Radius of copper atom = 127.81 pm = 127.81 X 10-10 cm…

Q: The density of lead is 11.35 g cm-3 and the metal crystallizes with fee unit cell. Estimate the…

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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…

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Q: What is the coordination number of an aluminum atom in the face-centered cubic structure of…

A: FCC lattice : here at eight corners eight atoms are present. Also, at six faces six atoms are…

Q: Tantalum is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.…

A: Given: Ta has BCC unit lattice. Molar mass of Ta = 191.01 g/mol. And density of Ta = 13 g/cm3.

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: Calculate the density of aluminum, given that it has an fcc crystal structure,an atomic radius of…

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Q: What is the arrangement of the Ca2+ ions (white spheres)? A BCC в) FCC HCP D sc

A: Arrangement of the Ca2+ ions (white sphere) = ?

Q: Which substance forms a metallic lattice? K C (graphite) I2 MgS

A:

Q: sentences describe the difference in structure or the arrangement of particles of a crystalline and…

A: Answer - Crystalline solid - A crystal or crystalline solid is a solid material whose constituents…

Q: A hypothetical element, Le, has a body centered cubic structure with a density of 6.93 g/cm?.…

A:

Q: Describe the features of the body-centered cubic unit cell?

A: Unit cell is the smallest repetitive portion of a solid crystal. Unit cell represents three…

Q: What are the various phases of SiO2?

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

Q: Calculate the radius of palladium atom in nm, given that Pd has an FCC crystal structure, a density…

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Q: What is the coordination number of the crystal structure shown below? O A. 4 В. 8 O C. 10 O D. 12

A: The crystal structure is FCC ( Face cubic cell ) it is unit cell having atoms in all the corners and…

Q: An FCC structure of an element has density 10.3 g/cc and edge length is 310 pm. Calculate the atomic…

A: It is given that the density in an FCC structure has a density of 10.3 g/cc or 10.3 g/mL and has an…

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…

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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.