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clear
//
//
//
//Variable declaration
rho=5.96; //density(gm/cc)
M=50; //molecular weight
N=6.023*10^23; //avagadro number
n=2; //number of atoms
//Calculations
a=(n*M/(rho*N))^(1/3); //lattice constant(cm)
r=a*sqrt(3)/4; //radius of atom(angstrom)
pf=n*(4/3)*%pi*r^3/a^3; //packing factor
//Result
printf("\n packing factor is %0.2f ",pf)
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