Iron(II) oxide has a cubic structure and each side of unit cell is 5 A. If density of the oxide is 4 g cm-3, calculate the number of Fe+2and O-2ions present in each unit cell. [Atomic mass of Fe = 56 u, O = 16 u, NA = 6.023 X 1023 mol-1]

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: Chromium forms a body centered cubic unit cell.  If the radius of a chromium atom is 125 pm, what is…

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: How many Ca2+ ions are present in one-unit cell of this crystal? А) 1 2 4 D) 6

A: Ca2+ unit cell is face centred cubic .

Q: BaS crystallizes in a cubic unit cell with S 2- ions on each corner and Ba 2+ on each face. How many…

A: The BaS crystallizes in a cubic unit cell where the S2- ions are present on the corners of the cubic…

Q: Tungsten has a body-centered cubic unit cell. How many atoms of WW are present in each unit cell?

A: In a body centered unit cell, one atom is present in each corner of the unit cell and one atom…

Q: Given an element that crystallized in a BCC unit cell. Its density is 13.5 g/cm^3. What is the…

A: d = zM/(a3NA) Where, d= density in g/cm3 z = number of atoms present in unit cell. M= molar…

Q: 4. Silver has a face-centered cubic unit cell. How many atoms of Ag are present in each unit cell?

A:

Q: A mole of a newly discovered crystalline substance weighs 14.56 grams and displaces 2.3 mL of water.…

A:

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: An element with density 10 g cm-3forms a cubic cell with edge length of 3 X 10-8 cm. What is the…

A: Given: Density of element          = 10 g cm-3 Edge length of unit cell   = 3 x 10-8 cm Atomic mass…

Q: An ionic compound crystallizes with 1 ion at each corner, 1 ion on two of the faces, and 1 ion on…

A:

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: Rhenium forms a series of common oxides which can be characterized by differing colors: Re2O7…

A: The given structure is represented as follows:

Q: 3 Given that the density of KBr(s) is 2.75 g/cr cm° and that the length of an edge of a unit cell is…

A: The formula unit of KBr in the unit cell has to be calculated. Given, Density = 2.75 g/cm3 Length of…

Q: If the density of europium is 5.25 g/cm3 at 20 degrees celsius, what is the mass (in grams)of one…

A:

Q: Thallium (I) chloride crystallizes in the cesium chloride lattice. The shortest distance between the…

A: CsCl has BCC arrangement. The given lattice thallium chloride (TlCl) is like cesium chloride. The…

Q: What is the density of a face centered cubic unit cell made up of atoms that each have a radius of…

A: Since in a face centred cubic unit, the atoms present along the face diagonal touch each other…

Q: Question attached

A: Unit cell is the smallest repeating unit which repeats in all directions, forming the entire crystal…

Q: An element (molar mass = 57.7 g/mol) crystallizes in a face-centered cubic unit cell. The radius of…

A: after knowing the cell edge and no of atom in the molecule the density can be calculated

Q: Assume that the diameter of a metal atom is 5 nm. What is the total volume (in nm3) occupied by the…

A:

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: What is the simplest formula of a solid containing A, B, and C atoms in a cubic lattice in which A…

A: There are three types of atoms A, B and C are present in the cubic lattice. Atoms at the corners are…

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: 1. Which of the following unit cells do not exist for monoclinic lattices? a) Simple unit cell, b)…

A: 1) c) FCC doesn't exist for the monoclinic lattices. 2) a) [310]

Q: Calcium sulfide adopts the sodium chloride crystal structure(Figure). How many S²⁻ ions are in the…

A: Calcium sulfide is the chemical compound with the formula CaS. This white material crystallizes in…

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: Methane crystallizes in a cubic unit cell with a = 0.589 nm. (a) Calculate the theoretical density…

A:

Q: NH4Cl has a face-centered cubic unit cell in which the Cl- anions occupy corners and face centers,…

A: Given data: ionic radius of NH4+ = 123.5 pm ionic radius of Cl- = 184.0 pm Formula used:…

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: Calcium metal forms a face-centered cubic unit cell with an edge length of 557 pm (5.57 x 10 cm).…

A:

Q: Assume that the diameter of a metal atom is 5 nm. What is the total volume (in nm3) occupied by a…

A:

Q: A metal has an HC crystal structure, a density of 6g/cm3, and an atomic weight of 36g/mol. What is…

A: For HC crystal structure ., Z = 6 Molar mass of metal = 36 g/mol Density of metal = 6 g/cm3 we know…

Q: How many atoms can be assigned to its unit cell if an element forms (i) a body-centred cubic cell,…

A: (i) a body-centred cubic cell: The total number of atoms assigned to one unit cell of a body-centred…

Q: BeO has a face-centered cubic unit cell in which the O2- anions occupy corners and face centers,…

A: In FCC crystal structure, the contribution of anion per unit cell is 4(1/8 at each corner and 1/2 at…

Q: The crystal structure of magnesium oxide, CaS, is similar to rock salt (NaCl). a) What are the…

A: Given: CaS has similar structure to that of NaCl.

Q: If the density of europium is 5.25 g/cm3 at 20 degrees celsius with a volume of 1.52 x 10-22cm3,…

A:

Q: 3. A mole of a newly discovered crystalline substance weighs 14.56 grams and displaces 2.3 ml of…

A:

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: Europium crystallizes in a bcc cubic lattice.    a. If the atomic radius of a europium atom is 231…

A: A) The volume of the unit cell is = (a3) a=  given 231 pm = 231*10-10 cm   So volume of unit is…

Q: What is the simplest formula of a solid containing A, B, C atoms in a cubic lattice in which A atoms…

A: In the cubic lattice, the atoms can be placed in Corners  Body center  Face center To find the…

Q: The unit cell of MgO is shown below   Does MgO have a structure like that of NaCl or ZnS? If the…

A:

Q: In any cubic lattice an atom lying at the corner of a unit cell is shared equally by how many unit…

A:

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.