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clear
//
//
//
//Variable declaration
n=2 //number of atoms per unit cell
M=6.94 //atomic weight(amu)
N=6.02*10**26 //avagadro number(kg/mol)
rho=530 //density(kg/m**3)
//Calculation
a=(n*M/(rho*N))**(1/3) //lattice constant(m)
//Result
printf("\n lattice constant is %0.3f angstrom",a*10**10)
printf("\n answer given in the book varies due to rounding off errors")
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