2. A metal with atomic weight of 63.65 g/mol crystallizes with a face-centered cubic unit cell. The volume of the cell is 0.0473 nm3. a) What is the density of a single atom in g/cm3 ? b) What is the density of the unit cell in g/cm3 ?

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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.