Magnesium oxide (MgO) has a NaCl type crystal structure. The ionic radii of Mg2+ and O2- ions are 0.86 Å and 1.26 Å, respectively. The molar mass of Mg and O are 24.305 g mol-1 and 15.999 g mol-1, respectively.  a. Calculate the no. of Mg2+ and O2- ions in the unit cell.  b. Calculate the density.

Q: 2. ZrC has a rock salt structure (NaCl) which may be considered as two interpenetrating f.c.c.…

A: Given, The lattice of - FCC.a. To draw the unit cell and determine the no. of atoms of each type.b.…

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A:

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A: Given: density of an (NaCl) ionic solid = 3.34 g/cm3  length of an edge (a) = 482 pm…

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A:

Q: -9 Silicon used in computer chips must have an impurity level below 10 (that is, fewer than one…

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Q: me kim d of ystal sti as below: CI Na How many O²- ions are there per unit cell in solid…

A: Soln  Mno per unit cell 4

Q: 3- Calculate the theoretical density of iron crystal (BCC). The lattice constant a = 2.866A?

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: You've discovered what you think is a new face-centered cubic metal.  You find the density of this…

A: Given, The lattice is fcc density =5.58 g/cm3 edge length, a = 4.46×10-8 cm

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A: ......

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A: Given information:Edge length of unit cell (a) = 2.866 ÅDensity of metal (d) = 7.87 g/cm3

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A:

Q: The packing fraction of an irregular unit cell is 0.85. The volume of the unit cell is 7.74 pm3. The…

A: The solution is given below:

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A:

Q: Please determine the number of cations and anions, and the stoichiometry of the ionic solid in the…

A: NaCl or rock salt is an ionic compound that consists of Na+ and Cl-.  It occurs as a white crystal.…

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Q: Solid cesium bromide has the same kind of crystal structure as CsCl which is pictured below: CI Cs…

A:

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A:

Q: The inorganic part of bone is made of CaF2, or fluorite. For CaF2, the unit cell is cubic, and the…

A: CaF2 has fcc lattice, hence Z=4 Given, At. mass Ca = 40.08 g/mole At. mass F = 19.00 g/mole…

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.