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+//Chapter 10 : Crystallography and Crystal Imperfections
+
+clear;
+
+//Variable declaration
+rho=7.86*10**3        //density of material
+n=2                   //No. of atoms/cell
+A=55.85               //Atomic weigth
+No=6.023*10**26       //Avagadro's No.
+
+//Calculations
+a=((n*A)/(No*rho))**(1/3)/10**-10
+
+//Result
+mprintf("Lattice parameter a= %.5f*10**-10 m",a)
+