Расчет критических свойств для франция

Abstract

The use of semi-empirical and empirical dependencies in many cases allows us to solve problems associated with great experimental difficulties. Analytical and graphical dependencies of the critical properties (pressure, volume, temperature and density) of alkali metals on their order numbers are considered. The dependencies obtained are used to calculate these properties for francium. Karapetyan’s comparative methods and Mendeleev’s method were applied for the description.