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// Chapter 5 Example 1
//==============================================================================
clc;
clear;
//input data
//Copper has FCC structure
r = 1.273; // Atomic radius in angstrom
N = 6.023*10^26; // Avagadros number in atoms/kilomole
A = 63.5; // Atomic weight of copper in grams
n = 4; // No. of atoms per unit cell for FCC
//Calculations
r1 = r*10^-10; // Radius conversion from angstrom to m
a = (4*r1)/sqrt(2); // lattice parameter for FCC
p = (n*A)/(N*a^3); // Density of copper
//Output
mprintf('Lattice Constant a = %3.1e m\n Density of copper = %3.1f kg/m^3',a,p);
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