Answer Happy

Q: A quantitative theory of bonding in ionic crystals was developed by born and Meyer. the total potential energy of the system is taken to be ae А U = N| R” 47€ R Where N is the number of positive-negative ion pairs and a is the Madelung constant. A and n are constants determined from experiments. a) Show that the equilibrium inter atomic distance is given by the expression 4πε, Α n R-1 = ae? b) Establish that the bonding energy at equilibrium is 1 U. A Nae? 4πε R. = 1 c) calculate the constant n for Naci, given that the measured binding energy for this crystal is 7.958V/molecule and a = 1.75