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clc//
//
//
//Variable declaration
M=63.5; //atomic weight
N=6.023*10^23; //avagadro number
r=1.278*10^-8; //radius(m)
n=4;
//Calculation
m=M/N; //mass of copper atom(gm)
a=4*r/sqrt(2);
Mu=n*m; //mass of unit cell
d=Mu/a^3; //density of copper crystal(gm/cm^3)
//Result
printf("\n density of copper crystal is %0.3f gm/cm^3",d)
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