A sodium chloride crystal can be described as a face- centred cubic chlorine crystal with the sodium ions occupying the interstitial positions. What would be the maximum radius, r, of the sodium ions such that chlorine ions of radius, a, achieved the maximum face-centred cubic packing efficiency for the chlorine ions? The radius, a, of a chlorine ion is a=1.0843nm.

Q: A crystal is composed of two elements, A and B. The basic crystal structure is a body-centered cubic…

A: The face of the body-centered cubic lattice is shown as- Atoms A are at each of the corners and…

Q: If the density of solid tungsten is 19.3g/cm3, what is the packing efficiency of W if it adopts a…

A: The given information is: Density of solid tungsten = 19.3g/cm3 Type of cell = body-centered Molar…

Q: An orthorhombic unit cell of a compund of molar mass 135 g/mol has the dimensions a = 589 pm, b =822…

A:

Q: A metal crystallizes with a face-centered cubic lattice. The edge of the unit cell is 442 pm. What…

A: The repetition pattern of crystal lattice is known unit cell

Q: A metal has a body-centered cubic lattice with a unit cell edge length of 2.866 Å (1 Å = 10⁻¹⁰ m).…

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

Q: A metal atom that has an atomic weight of 69.892 amu crystallizes in a face-centered cubic lattice…

A:

Q: a metal has a body centered cubic packing structure and its density is 6.88 g/ml volume of one atom…

A:

Q: polonium with an atomic radius of .19nm  is the only element to crystallize a simple cubic structure…

A: Given:radius of Polonium (r) = 0.19 nmAtomic mass of Polonium is 209 amu.To convert this mass into…

Q: Radius of atom of an elment is 500 pm . If it crystallises as fcc crystal lattice. What is the…

A: Given,Radius of atom of an element = 500pm.

Q: Metallic silver crystallizes in a face-centered cubic lattice, with one Ag atom per lattice point.…

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: 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: Strontium chloride hexahydrate (SrCl2?6H2O) crystallizes in the trigonal system in a unit cell with…

A: Let  M g/mol be the molar mass of a crystalline substance ,which has a cubic lattice with unit cell…

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.