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//Variable declaration
epsilon0=8.84*10**-12;
R=0.55*10**-10; //radius(m)
N=2.7*10**25; //number of atoms
//Calculation
alpha_e=4*%pi*epsilon0*R**3; //polarisability of He(farad m**2)
epsilonr=1+(N*alpha_e/epsilon0); //relative permittivity
//Result
printf('polarisability of He is %0.3f *10**-40 farad m**2\n',(alpha_e*10**40))
printf('relative permittivity is %0.3f \n',(epsilonr))
printf('answer varies due to ing off errors')
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