Metallic calcium crystallizes in a face-centered cubic lattice, and the atomic radius of calcium is 1.97Å. Calculate the density of calcium. (1Å = 10-8 cm) Select one: a. 1.28 g/cm3 b. 1.42 g/cm3 c. 1.56 g/cm3 d. 1.84 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.