clear;
clc;
printf("\nEx1.19\n");
//page no.-32
//given
n=2;...........//no. of atoms per unit cell
M=6.94;........//atomic wt. of Ge
N=6.02*10^26;....//avagadro no.
rho=530;........//density in Kg/m^3

a=((n*M)/(rho*N))^(1/3)........//lattice constant in angstrom

printf("\nlattice constant is 3.516 angstrom\n");