Tantalum atoms packs in a regular pattern in a three dimensional lattice in pure tantalum metal. a.) Assume the edge length of the unit cell for tantalum is 331 pm. Calculate the volume of this unit cell in cm³. Remember, there are 1.0x10¹⁰ pm/cm. b) calculate the mass in grams of this unit cell. c). calculate the density of this unit cell in g/cm^3

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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.