Vapor-pressure data for the elements mercury, lithium, sodium, and potassium were correlated using an equation of state, PV = RT+BP, where B was evaluated empirically with the relationship B = b/Tm. Values of B thus obtained are compared with values of the second virial coefficient calculated from a Lennard-Jones 6–9 potential curve. Calculated values for vapor pressures and fugacity-to-pressure ratios are presented for these elements as a function of temperature.
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W. T. Hicks (1963) studied this question.
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