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clear
//
//
//
//Variable declaration
epsilonr=1.0000684 //dielectric constant
N=2.7*10**25 //number of atoms
epsilon0=8.85*10**-12
E=10**6 //electric field(V/m)
Z=2
e=1.6*10**-19 //charge(coulomb)
//Calculation
alphae=epsilon0*(epsilonr-1)/N //polarisability(Fm**2)
r=(alphae/(4*%pi*epsilon0))**(1/3) //radius of electron cloud(m)
d=alphae*E/(Z*e) //displacement(m)
//Result
printf("\n polarisability is %e Fm**2",alphae)
printf("\n radius of electron cloud is %0.3f *10**-11 m",r*10**11)
printf("\n answer for radius given in the book varies due to rounding off errors")
printf("\n displacement is %0.1f *10**-16 m",d*10**16)
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