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//Variable declaration
epsilon0=8.85*10**-12;
epsilonr=1.0000684; //dielectric constant of material
N=2.7*10**25; //number of atoms(per m**3)
//Calculation
alpha_e=epsilon0*(epsilonr-1)/N; //electronic polarizability(F m**2)
//Result
printf('electronic polarizability is %e F m**2 \n',alpha_e)
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