Page 1 - Lesson Note 4
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SUBJECT-CHEMISTRY


                                                 CHAPTER-SOLID STATE


                       SUBTOPIC-Calculation of density of solid,Defects.

               KEY NOTES:


                 Let a: edge length of unit cell

                        d: density of the solid substance or unit cell

                        M: Molar mass


                         Z: Number of atoms per unit cell

                         m: mass of each atom


                       N A: Avogadro’s number































                       Any departure or deviation from perfectly ordered arrangement

                       of constituent particles in crystal is called imperfection or defect.
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