4) Using the unit cell to the right for Calcium fluoride do the following... a. Calculate the number of calcium ions per and the number of fluoride ions in the cell shown (the four F ions are completely inside, there are Ca²+ ions at the corners and one on each face) b. Use the simplest ratio from your part a answer to establish the ionic formula for Calcium fluoride. Calcium fluoride (CaF2) Ca2+

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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.