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//Calculate the Potential Energy of Interaction between two Argon atoms
//Example 16.4
clc;
clear;
alpha=1.66*10^-30; //Proportionality constant in m^3
I=1521; //Ionization energy of Argon in kJ mol^-1
r=4.0*10^-10; //Distance between two Argon atoms
V=-((3/4)*(alpha^2)*(I))/(r^6); //Potential energy of interaction between two Argon atoms in kJ mol^-1
printf("Potential energy of interaction between two Argon atoms = %.2f kJ mol^-1",V);
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