In a crystalline solid anions ‘C’ are arranged in cubic close packing, cations ‘A’ occupy 50% of tetrahedral voids and cations ‘B’ occupy 50% ofoctanedral voids. What is the formula of the solid?

Q: Silicon (Si) has the diamond and GaAs has the zinc blende crystal structures. Given the lattice…

A: Given  For  silicon (Si)  has dimond like crystal structure i.e. zinc blend.  Therefore,      FCC…

Q: (a) Write the formula for the ionic solids depending on the choise of the ions fill the cavities…

A: Note : The three questions are not interrelated to each other and all three are different questions,…

Q: A fictitious element forms a body centered cubic crystal structure in the solid state. Its atomic…

A: Given information: Molar mass = 185.2 g/mol Edge length = 152.2 pm

Q: UTOR Determining Metallic Radii from Unit Cell Data Metallic potassium crystallizes in a…

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Q: Calcium metal crystalizes in a a face-centered cubic structure. The edge length of the unit cell of…

A: Solids can be arranged in different types of unit cells such as face-centered unit cell, cubic unit…

Q: 12.16 Indicate the type of solid (molecular, metallic, ionic, or covalent-network) for each…

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Q: For a given pure metal which of the following cubic unit cells would result in the highest metal…

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Q: Need help with numbers 9 to 14. Thanks!

A: Dear student, you have posted multiple questions in a single file. I am answering the first one.…

Q: How are the following properties of crystals affected by Schottky and Frenkel defects?(i)…

A: The Schottky defect occurs when the lattice points are unoccupied in the crystal. These lattice…

Q: Not all unit cells have a cubic structure. Take for example the below image wherein the unit cell…

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Q: Perovskite is a compound with a cubic unit cell and has astrontium atom at the center of the cell,…

A: The crystal lattice is the regular three-dimensional arrangement of points in space. The unit cell…

Q: Cobalt crystallize in a HCP unit cell. Its atomic radius is 0.1253nm. Its density is 8900…

A: The expression for calculation of the avogadro’s number is shown below, d = Z×MV ×NA

Q: Calcium crystallizes in a body-centered cubic structure at467 °C. (a) How many Ca atoms are…

A: (a) Calcium crystallizes in a body-centered cubic structure. In a body-centered cubic structure,…

Q: 5. Diamond and silicon have the same type of lattice structure, an fcc with a basis, but different…

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: letter d only thank you

A: Since in part c you have calculated density of Aluminium atom = 3.66 g/cm3  And It is given that 26…

Q: An ionic solid consists of A atoms and B atoms, and its unit cell structure is shown below. The…

A: The solution is given below -

Q: Aluminum crystallizes in FCC arrangement, Potassium forms BCC structure and Polonium follows an SCC…

A: Coordination number(C.N) is the number of nearest neighbouring atoms/ ions to the atom. FCC has C.N…

Q: A small part of a crystal lattice is sketched below. The unit cell is outlined in red. How many…

A: The crystal lattice given is,

Q: Mercury is a poisonous metal that is used in thermometers. When mercury is at temperatures below its…

A: Hg has a simple cubic unit cell.

Q: What is the chemical formula for the ionic compound whose unit cell is shown? (A and B are cations;…

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Q: In XCI, which crystallizes in CsCl structure, one edge of the unit cellisfound to be 3708 pm Using…

A: Given: Edge length(a)=370.8 pm The radius of Cl-= 181 pm

Q: What fraction of the total volume of a cubic closest packed struc- ture is occupied by atoms? ( .)…

A: To determine a) The fraction of the total volume of a cubic closest packed structure that is…

Q: With Solution

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Q: An element crystallizes in a body centered cubic unit cell. The radius of this element is 2.2×10^-10…

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Q: a) SrCl2 is crystallized in cubic structure as can be seen in the figure below. The density of this…

A: Answer is explained below. Formula unit calculation for SrCl2 is given below.

Q: Silicon has the diamond structure with a unit cell edgelength of 5.43 Å and eight atoms per unit…

A: The edge length of the cubic unit cell is 5.43 Å. The conversion of 5.43 Å into centimeter (cm) is,…

Q: The radius of a single atom of a generic element X is 161 picometers (pm) and a crystal of X has a…

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Q: A metal with density 18.60 g/cm3 crystallizes in face center cubic unit cell. What is the atomic…

A: Since the lattice structure of metal is  face centre cubic Hence the atoms of metal are present at…

Q: The structure of the compound K2O is best described as a cubic closest packed array of oxide ions…

A: The lattice structure of cubic closed packing (ccp) is similar to that of FCC (face centered cube).…

Q: Buckminsterfullerene (C₆₀) is a soccer-ball–shaped mol-ecule with a C atom at each vertex. It…

A: No of carbon atoms in the unit cell = 240 atoms Molar mass of carbon = 12.01 g/mol Now, mass of…

Q: Define the following terms in relation to crystalline solids:(i) Unit cell (ii) Coordination…

A: (i) Unit cell :  Smallest part of crystal lattice which on repetition in 3D can generate entire…

Q: 1. NaCl has a has a face centered cubic (fcc) structure. a. How many (a) Na atoms per unit cell, Cl…

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Q: Molybdenum (Mo) (atomic mass= 95.94 g/mole and Density=10.2 g/cm^3) and Sodium(Na) (atomic mass and…

A: Given,  Atomic mass of Mo = M = 95.94 g/mole Density = 10.2 g/cm3  Atomic mass of Na = M = 22.99…

Q: The density of solid Ni is 8.90 g/cm3. How many atoms are present per cubic centimeter (cm3) of Ni?…

A: Density can be expressed in terms of number of atoms in unit cell (Z), molar mass (M), Avogadro…

Q: Cobalt crystallize in a HCP unit cell. Its atomic radius is 0.1253nm. Its density is 8900 kg/m…

A: The given element is cobalt. It crystallizes in HCP unit cell. So, the number of atoms in this unit…

Q: Sodium sulfate (Na2SO4) crystallizes in the orthorhombic system in a unit cell with a = 5.863 Å, b=…

A: The orthorhombic system is one of the seven crystal lattices and is characterized by edge length and…

Q: An element crystallizes in aface-centered cubic latticeand has a density of 1.45 g/cm3. The edge of…

A: We know that : d = nM/a^3NA or, M = (d*a^3*NA)/(n) ...(1) Here, n = no. of atoms present in FCC = 4…

Q: QUESTIONS FOR UNIT CELL GEOMETRY EXP. NAME 1. Calculating the packing fraction (the percent space…

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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.