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clc//
//
//
//Variable declaration
a=0.27*10^-9; //spacing(m)
c=0.494*10^-9;
n=6; //number of atoms
M=65.37; //atomic weight
N=6.023*10^26; //avagadro number
//Calculation
V=3*sqrt(3)*a^2*c/2; //volume of unit cell(m^3)
rho=n*M/(N*V); //density of zinc(kg/m^3)
//Result
printf("\n volume of unit cell is %0.3f *10^-29 m^3",V*10^29)
printf("\n density of zinc is %0.0f kg/m^3",rho)
printf("\n answer varies due to rounding off errors")
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