Iron crystallizes into a body-centered cubic structure. If the atomic radius of iron is 126 pm (picometer), what is the density of iron in g/cm3?        (Atomic mass of iron = 55.85 u; 1 u = 1.6605 x 10–24 g; 1 pm = 10–10 cm)             (A) 7.53           (B) 8.20           (C) 5.80          (D) 15.1

Q: Choose

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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.