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//Example number 1.5, Page number 11
clc;clear;
close;
//Variable declaration
rCs=0.165*10**-9; //radius(m)
rCl=0.181*10**-9; //radius(m)
MCs=133; //atomic weight
MCl=35.5; //atomic weight
N=6.02*10**26; //Avagadro Number
//Calculation
a=2*(rCl+rCs)/sqrt(3); //lattice constant(m)
M=(MCs+MCl)/N; //mass of 1 molecule(kg)
V=a**3; //volume of unit cell(m**3)
rho=M/V; //density of CsCl(kg/m**3)
//Result
printf( "density of CsCl is %.3e kg/m**3",rho)
//answer in the book varies due to rounding off errors
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