Second Virial Coefficients of Noble Gases

A new three- parameter modified Berthelot equation of state has been developed and employed to calculate the second virial coefficients of neon, argon, krypton, xenon and radon. It is established that neon, argon, krypton, xenon and radon obey the single parameter law of corresponding states. It is established that the new parameter introduced in the attractive term of the equation of state is a thermodynamic similarity parameter.