Abstract
The alloying behaviour of HgNa and HgK liquid alloys has been investigated by assuming that the chemical complexes Hg2Na and Hg2K exist near the melting point on the molten amalgams. This has been used to obtain the concentration dependence of the free energy of mixing, activity, long-wavelength fluctuations and the volume of mixing. The results reveal that HgNa liquid alloys are more stable than HgK at all concentrations. There is every likelihood of the existence of Hg2Na and Hg2K complexes in the liquid alloys.