Copper iodide crystallizes in the zinc blende structure. The separation between nearest neighbor cations and anions is approximately 311 pm, and the melting point is 606 °C. Potassium chloride, by contrast, crystallizes in the rock salt structure. Even though the separation between nearest-neighbor cations and anions is greater (319 pm), the melting point of potassium chloride is higher (776 °C). Explain.

Q: Zinc sulfide is an important industrial source of zinc and is also used as a white pigment in paint.…

A: In ZnS structure, S2- ions occupy main positions and Zn2+ ions are present in alternate tetrahedral…

Q: A metal has atoms with a radius of 186.8 pm. It crystallizes in a face-centered unit cell. It has a…

A:

Q: 1. Given the following data, calculate the lattice energy of aluminum oxide, Al2O3.  a.-13 272 kJ…

A: Answer: Note: data mentioned of the electron gain enthalpy of oxygen is wrong. First electron gain…

Q: 1. A noble metal crystallizes in a cubic close-packed structure (the face-centered cubic cell) and…

A: Welcome to bartleby ! We have to calculate radius of unit cell(FCC)

Q: / BCC lithium has a lattice parameter of 3.5089 × 10-8 cm and contains one vacancy per 200 unit cell…

A: Given that,  BCC lithium has a lattice parameter of 3.5089×10-8 cm. Vacancy per unit cell = 200.…

Q: A (made-up) metal has a face-centered cubic crystal structure. Its density is 20.5 g/cm 3. Its molar…

A: For the FCC cubic,  Density = 20.5 g/cm3 Molar mass = 189 g/mol

Q: Some metal is known to have a cubic unit cell with an edge length of 0.396nm. In addition, it has a…

A: Given: Density of metal = 11.34 g/cm3. Molar mass of metal = 106 g/mol. And edge length of cubic…

Q: Which of the following statements concerning a metal crystallized in a face- centered cubic cell…

A:

Q: LiH crystallizes with H-ions defining either a simple cubic or a face-centered cubic lattice. The…

A: The density of a crystal is given as :

Q: Which of the following statements concerning the determination of crystal structure by x-ray…

A: X-ray crystallography is  branch of chemistry in which we determining the atomic and molecular…

Q: A metal crystallizes as bcc structure and the atomic is 186 pm. Calculate 1)Edge length 2) volume of…

A: Data: Crystalline structure of metal is BCC Radius of unit cell (r) = 186 pm = 186 × 10-10 cm Atomic…

Q: Osmium has a density of 22.6 g/mL. Calculate the radius of an Os atom expected if osmium…

A:

Q: Is it possible for all atoms in an ionic compound to lie on the lattice points asthey do in the…

A: No, this is not possible. This is because an ionic substance has at least two different atoms or…

Q: A (made-up) metal has a face-centered cubic crystal structure. Its density is 20.5 g/cm 3. Its molar…

A: Given, Structure: FCC (Face centred cubic lattice) Density (d) = 20.5 g/cm3 Molar mass of metal =…

Q: Depending on the conditions, manganese (Mn) can exhibit different crystal structures. Under certain…

A: Given information: The density of crystal lattice of manganese = 6.245 g/cm3 The edge length of the…

Q: 1. What is unique about metallic bonding compared to other states of matter? a. Metals feature…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Zinc oxide adopts the zinc blende crystal structure (Figure.). How many Zn²⁺ ions are in the ZnO…

A: Given information,         Zinc oxide adopts the zinc blende crystal structure

Q: Aluminum crystallizes with a face-centered cubic unit cell. The radius of an aluminum atom is 143…

A: Atomic mass of aluminium= 26.98 g/mol Atomic radius= 143.2 pm= 0.143 nm  To calculate density of…

Q: A hypothetical element crystallizes with a BCC unit cell. Its density is 5 g/cm3 and its molecular…

A: Given data,  Density of element = 5 g/cm3 Molecular weight of element = 235 g/mol  For a BCC unit…

Q: part 2 The structure of the unit cell when CaF2 crystallizes is shown below: How many Ca2+ ions are…

A: CaF2 crystallises in FCC unit cell, where Ca2+ ions occupy fcc sites and F- ions occupy tetrahedral…

Q: A metal, 55.761 g/mol, crystallizes in a face-centered cubic lattice (4 atoms/unit cell). The metal…

A:

Q: Sodium metal crystallizes in the BCC structure with the edge length of unit cell 4.29 x 10 -8 cm.…

A: For body centered cubic arrangement, radius and edge length of the unit cell (a) are related as,…

Q: Gold has a density of 19.3 g/mL. Calculate the radius of an Au atom expected if gold crystallizes in…

A:

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: crystallography

A: In X-ray crystallography, we used Bragg's law to identify the lattices parameters of crystal system.…

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: It often happens that a substance possessing a smectic liquid crystalline phase just above the…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Only one element (polonium) crystallizes with a simple cubic unit cell. Why is polonium the only…

A: Polonium is isovalent to Oxygen, so it has six valence electrons. Heavy atoms form solids at STP,…

Q: How many atoms are assigned to each unit cell of Hexagonal Close-Packed Crystal Structure?

A:

Q: The structure of the unit cell when CaF, crystallizes is shown below: How many Ca2+ ions are present…

A: In calcium Fluoride , CaF2 fluorite structure, calcium ions occupy all corners and centre of each…

Q: Indicate the type of solid (molecular, metallic, ionic, orcovalent-network) for each compound: (a)…

A: A chemical compound consists of two or more different elements which are bonded with each other…

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: A given element crystallizes in a compact cubic structure (cubic structure with centered faces) and…

A:

Q: Polonium (Po) is the only element known to crystallize in a simple cubic arrangement. The distance…

A: To Find: To find the radius of a polonium atom in a simple cubic arrangement.

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: Which one of the following statements is INCORRECT?   a.  Polonium is the only metal that has a…

A: Mostly metals don't show primitive cubic lattice.  Alkali metals are comparatively of larger size…

Q: Which type of solid has mobile electrons in the crystal (sea of electrons)? Covalent Molecular…

A:

Q: The coinage metals—copper, silver, and gold—crystallizein a cubic closest packed structure. Use the…

A: In order to find the radius of the copper crystal we have to first write down the given data:…

Q: A metal has atoms with a radius of 176.9 pm. It crystallizes in a face-centered unit cell. It has a…

A: Face centred cubic unit cell is the unit cell in which atoms are present at corners as well as at…

Q: Tungsten (W) has a body center cubic crystal structure. The metallic radius for a tungsten atom is…

A: Density : 18.5 g/cm3

Q: The density of Ni is 8.90 g/cm3. Does nickel crystallize in a simple cubic structure? Explain.

A: The density of Ni = 8.90 g/cm3. The edge length of the unit cell for nickel = 0.3524 nm Weight of 1…

Q: The structure of the unit cell when CaF2 crystallizes is shown below: How many Ca2+ ions are…

A: The structure of the unit cell when CaF2 crystallizes is shown above structure. Then,

Q: Cobalt crystallizes in a HCP unit cell. Its atomic radius is 0.1253 nm. Its density is 8,900 kg/m^3.…

A: The density of a unit cell is given by, Density = (Z)(M)(NA)(a3) where Z is the number of atoms, M…

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: The simplest part of a crystal where symmetrical patterns of points is present? a. cells b.…

A: The correct answer is (C) Unit

Q: Cobalt crystallizes in a HCP unit cell. Its atomic radius is 0.1253 nm. Its density is 8,900 kg/m.…

A: Cobalt crystallize in a HCP unit cell No. of effective atoms in hcp unit cell (Z) =6 Molar mass of…

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.