Calculate the volume of a unit cell of Nickel in nm3. The volume of unit cell of Nickel is 4.3142×10-29 m3. Note that Nickel has a Face Centred Cubic Lattice Structure. The atomic mass of nickel is 58.78 g/mole. Find the density of Nickel in Mg/m3. (Here, Mg is defined as Mega-gram) Use the value of Avogedro Number NA=6.023×1023  Use the below mentioned formulae to calculate the density (ρ)

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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.