Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. All of its isotopes are radioactive. In nuclear reactors, promethium equilibrium exists in power operation. This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium.
Promethium – Specific Heat, Latent Heat of Fusion, Latent Heat of Vaporization
Specific heat of Promethium is 0.18 J/g K.
Heat capacity is an extensive property of matter, meaning it is proportional to the size of the system. Heat capacity C has the unit of energy per degree or energy per kelvin. When expressing the same phenomenon as an intensive property, the heat capacity is divided by the amount of substance, mass, or volume, thus the quantity is independent of the size or extent of the sample.
Latent Heat of Fusion of Promethium is — kJ/mol.
Latent Heat of Vaporization of Promethium is — kJ/mol.
Latent heat is the amount of heat added to or removed from a substance to produce a change in phase. This energy breaks down the intermolecular attractive forces, and also must provide the energy necessary to expand the gas (the pΔV work). When latent heat is added, no temperature change occurs. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.
See also: Mechanical Properties of Promethium
|Specific Heat||0.18 J/g K|
|Heat of Fusion||— kJ/mol|
|Heat of Vaporization||— kJ/mol|
Properties of other elements