A metal crystallizes in the face-centered cubic (FCC) lattice. The density of the metal is 21450 kg/m³, and the length of a unit cell edge, a, is 392.4 pm. Calculate the mass of one metal atom. 195 mass: g Incorrect

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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.