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// Scilab Code Ex14.4 Calculating electric polarizability of Oxygen atom: Page-465 (2010)
e = 1.602e-019; // Charge on an electron, coulomb
p = 0.5e-022; // Dipole moment of oxygen atom, C-m
d = 4e-017; // Distnace of the centre of negative charge cloud from the nucleus, m
epsilon_0 = 8.85e-012; // Electrical permittivity of free space, coulomb square per newton per metre
// In equilibrium, Coulomb interaction = Lorentz force
// i.e. 8*e*E = (8*e)*(8*e)/(4*%pi*epsilon_0*d^2)
// Solving for E
E = 8*e/(4*%pi*epsilon_0*d^2); // The strength of local electric field, volt per metre
// As p = alpha*E, solving for alpha
disp(E);
alpha = p/E; // Atomic polarizability of oxygen, farad-metre square
printf("\nThe atomic polarizability of oxygen = %3.1e farad-metre square", alpha);
// Result
// The atomic polarizability of oxygen = 6.9e-048 farad-metre square
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