Abstract
Simultaneous measurements of the density and electrical conductivity have been carried out for expanded liquid dilute amalgants containing Cd, Bi, Na, Pb etc. in the range of temperature and pressure up to 1550°C and 2200 bar. At high temperatures and pressures, substantial volume contraction and large increase in conductivity are brought about by the addition of a small amount of the elements with high-valency such as Bi and Pb into expanded liquid Hg. The observed large negative excess volume of mixing can be attributed to the loosely-packed structure of Hg solvent and to the change in the character of cohesion due to the injection of excess electrons.
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