Calcium fluoride forms a crystalline lattice in fluorite. The fluoride ions are the lighter spheres in the unit cell shown. Choose the best description of the interstitial holes that fluoride ions occupy.

Q: Magnesium oxide (MgO) has a NaCl type crystal structure. The ionic radii of Mg2+ and O2- ions are…

A: NaCl have FCC lattice.

Q: Simple Cubic Unit Cell Sketch the cell. Number of atoms/cell How many atoms does each individual…

A:

Q: The density of turquoise, CuAl6(PO4)4(OH)8(H2O)4, is 2.927 g cm-3 . This gemstone crystallizes in…

A: Given, density of turquoise= 2.927 g cm-3             a =7.424 Å = 7.424 x 10-8 cm             b=…

Q: The mineral perovskite has a calcium atom at each corner of the unit cell, a titanium atom at the…

A:

Q: calculate the radius of a rhodium atom if the density is 12.41g/cm^3 and crystallizes with the…

A: Rhodium crystallizes in a face centered cubic (fcc) unit cell.A fcc unit cell has 4 atoms in itmolar…

Q: Assume some metal that has a body-centered cubic lattice with all atoms at lattice points. Its…

A: In a body centered unit cell one atom exist in the center and eight 1/8 atom lies in the corner of…

Q: Name the crystal system for which all four types of unit cells are possible.

A: A unit cell is formed by the repetitive structure of a solid. The four types of cubic unit cells…

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

A:

Q: Beryllium has an HCP unit cell for which the ratio of the lattice parameters c/a is 1.568. If the…

A: The HCP unit cell or hexagonal closest packed consists of 6 atoms in one unit cell and its…

Q: how would you find the density of a fcc unit cell of rhodium given that the atomic radius is 173 pm.

A: We know, for fcc unit cell, r = a/(2(√ 2))                                         a = r(2(√ 2))…

Q: Calculate the packing fractions of (i) a primitive cubic unit cell, (ii) a bcc unit cell, (iii) an…

A: Packing fractions give us an idea about how well the atoms are packed in the unit cell. The packing…

Q: A unit cell must be electrically neutral. What is the charge on the oxygen ion assuming it has a…

A: Unit cell is basic unit of a lattice that must be electrically neutral.

Q: Describe the crystal structure of Pt, which crystallizes with four equivalent metal atoms in a cubic…

A: The platinum crystal consists of face-centered cubic arrangement. The unit cell consists of atoms of…

Q: Why do covalent and molecular crystals typically have a much lower packing density than metal…

A: Covalent crystal have much Lower density than metal crystal.

Q: The radius of a single atom of a generic element X is 167 pm and a crystal of X has a unit cell that…

A: Recall the relation between radius(r) and edge length (a)for simple cubic unit cellr = a/2given r =…

Q: Define crystal lattice and unit cell.

A: Lattice is a collection of lattice points that are arranged in a periodic pattern so that the…

Q: etallic tantalum crystallizes in a body-centered cubic lattice, with one Ta atom per lattice point.…

A:

Q: What is the difference between hexagonal closest packing and cubic closest packing? What are the…

A: Hexagonal Closed Packing In a hexagonal closest packed structure, the third layer has the same…

Q: Molybdenum metal, Mo, crystallizes in a cubic arrangement. In which of the cubic unit cells does Mo…

A: Given, Molybdenum metal, crystallizers in cubic arrangement. Density (d) = 10.22 g/cm3 Atomic radius…

Q: Chromium has a structure with two atoms per unit cell. Is the structure of this metal simple cubic,…

A: Unit cell is the primary unit of crystal lattice that repeats it to form whole lattice. Unit cells…

Q: if the atomic radius of Silver (Ag) is 0.144 nm, calculate the volume of its unit cell in cubic…

A: Given  Atomic radius of Silver ( r ) = 0.144 nm  Volume = ?

Q: Sketch the (110) plane in a bcc unit cell and give the positions of the atoms whose centers are…

A: For plane (110), represent movement in X, Y and Z direction, the direction is given by cartesian…

Q: The unit cell of a compound containing strontium, iron, and oxygen is shown here. Compute the…

A:

Q: Show that your calculation of number of atoms in a unit cell (⅛, ¼, ½, 1 added together support the…

A: We know Crack is a BCC(body centre cubic) structure . In BCC structure eight atoms are present at…

Q: An element with molar mass 27 g mol-1 forms a cubic unit cell with edge length 4.05 X 10-8 cm. If…

A: Given data: The molar mass of the element (M) =27 g mol-1 The edge length of the cubic unit cell (a)…

Q: 6. Rhodium crystallizes in a face-centered cubic unit cell. The radius of a rh 135 pm. Determine the…

A: Given metal is rhodium And it's radius is 135pm

Q: Simply explain ‘unit cell’. Name and draw the three subtypes of cubic unit cells. Describe their…

A: Smallest repeating unit of space lattice is called unit cell. They are characterized by their…

Q: Calcium sulfide has a face-centered cubic unit cell with sulfide ions in octahedral holes. Remember,…

A:

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

A:

Q: What is a crystalline lattice? How is the lattice represented with the unit cell?

A: Lattice is a collection of lattice points that are arranged in a periodic pattern so that the…

Q: Molybdenum crystallizes with the body- centered unit cell. The radius of a Mo atom is 136 pm.…

A: (a)Determine edge length of the unit cell:

Q: Silver crystallises in face-centred cubic (fee) unit cell. If the radius of silver atom is 145 pm,…

A: For FCC structure,  Relation between length of each side of the unit cell and radius of atom is…

Q: The metal cesium crystallizes in a body-centered cubic lattice.  If the density of cesium is 1.88…

A: Given density of Cs = 1.88 g/cm3  For body-centered cubic lattice, number of effective atoms per…

Q: How many atoms constitute one unit cell of a face-centred cubic crystal?

A: In face-centered cubic crystal; Total 3 atoms are present at 6 faces of the cube. One atom per…

Q: What is the coordination number and the packing fraction of a primitive cubic lattice in which there…

A: Given lattice,           Primitive cubic lattice. The number of atoms in a primitive cubic lattice…

Q: Consider an alloy of copper and gold with the  structure shown here: a) What is the volume (cm3) of…

A:

Q: Assuming atoms of radius of 1.00 Å and atoms just touching one another, calculate the percentage of…

A: Given that the crystal lattice is a face-centered cubic and the atomic radius is 1.00 A0. The volume…

Q: What is a unit cell? Sketch a unit cell and label the dimensions a, b, and c and the angles 6.…

A: The answer is as follows:

Q: The metal lithium crystallizes in a body-centered cubic lattice. If the density of lithium is 0.535…

A: Given: The density of lithium, d=0.535 g/cm3 For body-centered cubic, Z=2 The edge length of the…

Q: Molybdenum crystallizes with the body-centered unit cell. The radius of a molybdenum atom is 136 pm.…

A: Determine edge length of the unit cell:

Q: What is the coordination number of an atom in a face-centered unit cell?

A: The coordination number of face-centered unit cell has to be given,

Q: What is the edge length of a simple cubic unit cell made up of atoms having a radius of 158 pm?

A: Since we only answer one question at a time, we'll answer the first one. Please resubmit the…

Q: An orthorhombic unit cell of a compound of molar mass 135.01 g mol−1 has the dimensions a = 589 pm,…

A: To calculate The number of formula units in a unit cell. Mass density

Q: Calcium fluoride forms a crystalline lattice in fluorite. The calcium ions are the darker spheres in…

A: Given , Grey ball represents  Ca2+  ions. White ball represents F- ions.

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.