Determine the radius of the smallest cation that can have (i) sixfold and (ii) eightfold coordination with the Cl− ion (radius 181 pm).

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

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Q: Among well-known structure types, NaCl, Zinc Blende (ZnS), Wurtzite (ZnS), Rutile (TiO2), Fluorite…

A: Structure of ionic crystals--- Ionic crystals Coordination number NaCl Na+ = 6 Cl- = 6 ZnS…

Q: iobium crystallises in body-centred cubic structure. If the atomic radius is 143.1 pm, calculate the…

A: To calculate the density of a unit cell, the equation used is: ρ=Z × MNA × a3         ......(1)…

Q: What is the first-order scintillation angle of the shimmering x-rays of a crystal surface with a…

A: Given that: Order of Scintillation (n)= 1 Distance between the two planes (d) = 0.204nm Wavelength…

Q: Show for the face-center cubic crystal structure that the unit cell edge length a and the atomic…

A: In a face-center cubic crystal, atoms occupy all corners and faces of the cube. The space filled…

Q: Define these properties and explain the relationship of IMF strength to each property. (a) Boiling…

A: (a) Boiling point Boiling point is the point where a matter changes its state from liquid to gas.…

Q: Consider a two-dimensional crystal with rectangular shape, dimensions 10 um x1 um, lattice spacing…

A: Fermi energy level =  (lattice spacing )/2 or Energy gap /2

Q: 1) The volume of one ruthenium atom (molar mass = 101.1 g/mol) is 1.211x10 2³cm³. What would be the…

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Q: A compound with the formula Rb3C60 has been shown to demonstrate superconductivity below 30.0 K.…

A: Given information,       Compound formula Rb3C60.        The C60 molecules have a face-centered…

Q: The unit cell for tin has tetragonal symmetry, with a and b lattice parameters of 0.583 and 0.318…

A: It is given that tin has a tetragonal symmetry and a and b are lattice parameters and their values…

Q: Determine the minimum cation-to-anion radius ratio for a coordination number 8.

A: The minimum cation-to-anion radius ratio for a coordination number 8 has to be determined.

Q: 20. A unit cell has the dimensions a = 4 A, b= 6 A, c = 8 A, x = ß = 90°, y = 120°. Determine: a)…

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Q: What is the density, in g/cm, of a hypothetical metal Imaginarium (Im-28.5 g/mol), if its atoms are…

A: In fcc crystal lattice there are four atoms present in an unit cell.

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

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Q: The unit cells of SbCl3 are orthorhombic with dimensions a = 812 pm, b = 947 pm, and c = 637 pm.…

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Q: Sketch the [1̅010] directions in a hexagonal unit cell

A: Procedure for drawing planes for [1̅010]. 1. Converting four index miller indices of [1̅010]. into…

Q: The unit cells of SbCI3 are orthorhombic with dimensions a= 812 pm, b = 947 pm, and c = 637 pm.…

A: For orthorhombic system, So that, Where, dkhl=spacing of planes.

Q: Determine the radius of the smallest anion that can have (i) sixfold and (ii) eightfold coordination…

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Q: Questión 4 Tungsten is BCC and has a lattice constant a of 0.31648 nm. Calculate the following…

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Q: Protein crystal with 261 amino acids , dimensions 500 x500x20 um. The protein crystallized in…

A: Given: a=42.3, b=41.1, c =72.2 A  β = 103.8 degrees. Dimensions of protein = 500 x 500x 20 um Number…

Q: Briefly explain the difference between particle and crystal size

A: One of the four basic states of matter is solid. A solid's molecules are densely packed together and…

Q: How do you find the coordination number for [Al(OH)4(H2O)2]-?

A: Coordination number is the number of atoms, ions, or molecules that a central atom or ion holds as…

Q: Construct a (011) within a unit cell.

A: A lattice plane in a unit cell is those plane whose intersections with the lattice are periodic.

Q: The radius of gyration of a long one-dimensional chain molecule is found to be 7.3 nm. The chain…

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Q: Find the electric potential energy of an Na+ ion and a Cl- ion separated by 0.24 nm. Consider the…

A: The energy possessed by the charges due to their position at a certain point is known as potential…

Q: Data on a single crystal of NiSO4⋅7H2O give χm = 6.00 × 10−8 m3 mol−1 at 298 K. Identify the…

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Q: Determine the edge length and atomic radius of crystalline molybdenum (Mo) having a body-centered…

A: Given: Density= 10.28 g/cm3 The atomic weight of Mo=95.95 amu= 95.95 g Body centred cell (Z) =2…

Q: A metal with molar mass of 46.15g/mol crystallizes in a face-centered cube with edge length of 392…

A: In a face centered cube unit cell one atom exist in the center and eight 1/2 atom lies in each face…

Q: When spheres of radius r are packed in a body-centered cubicarrangement, they occupy 68.0% of the…

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Q: Given Cs (262 pm), TI (171 pm), and B (88 pm) with their noted atomic radii, which atom is most…

A: Interstitial impurity occurs when an impurity atom occupies an octahedral hole or tetrahedral hole…

Q: a) It is considered that a solid substance has an orthorhombic structure, Since the edges of the…

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Q: Molybdenum has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic weight of 95.94…

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Q: In a certain unit cell, planes cut through the crystal axes at (2a, 3b, c), (a, b, c), (6a, 3b, 3c),…

A: Steps to find Miller indices: Write the intercepts of the crystal axes Take the reciprocals Clear…

Q: The polypropylene (repeat unit CH₃CHCH₂) in a plastic toy has a molar mass of 2.8X10⁵ g/mol and a…

A: Here poly propylene  is a polymer having propene as a monomers. The monomeric unit added itself to n…

Q: Two coordination spheres for MnCl3(CN)3

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Q: Given Cs (262 pm), Tl (171 pm), and B (88 pm) with their noted atomic radii, which atom is most…

A: Interstitial impurity is always smaller in size as compared to host atom i.e Sn.

Q: 1- a) Calculate the planar atomic density in atoms per square milimeter for (110) crystal plane in…

A: (a) Solution -

Q: Calculate a value for the atomic radius of a chromium atom with a coordination number of 12 given…

A: Given that the crystal lattice is a bcc-centered cubic. The volume of a unit cell in bcc can be…

Q: The Cesium ions has 8 Chlorine ions on its nearest neighbor, what is the coordination number of…

A: In this question, we will determine the coordination number of Cesium ion.  You can see the solution…

Q: Calculate the separations of the planes {112}, {110}, and {224} in a crystal in which the cubic unit…

A: Given data, Planes = {112}, {110}, and {224} Cubic unit cell has side 562 pm. Calculate the…

Q: Calculate the density (g/cm³) of Rb if it crystallizes in body center cubic (bcc) and has a radius…

A: Given the radius of Rb is  272 pm. The density of Rb has to be calculated.

Q: Silver forms a face-centered cubic lattice, and a silver atom is 288 pm in diameter. Calcula

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Q: Define polymorphism and allotropy. Give ONE example of materials that have polymorphic…

A: Polymorphism: Polymorphism can be defined as the ability of a substance to crystallize into…

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.