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clear
//
//
//
//Variable declaration
M=55.85 //atomic weight(amu)
N=6.02*10**26 //avagadro number(kg/mol)
rho=7870 //density(kg/m**3)
a=2.9*10**-10 //lattice constant(m)
//Calculation
n=a**3*rho*N/M //number of atoms per unit cell
//Result
printf("\n number of atoms per unit cell is %0.3f ",n)
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