Thermal Properties of Promethium and Cerium
Specific Heat
0.18 J/(kg K)
  
33
0.19 J/(kg K)
  
32
Molar Heat Capacity
Not Available
  
26.94 J/mol·K
  
23
Thermal Conductivity
17.90 W/m·K
  
99+
11.30 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
6.30 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
414.00 kJ/mol
  
16
Enthalpy of Fusion
7.50 kJ/mol
  
99+
5.46 kJ/mol
  
99+
Enthalpy of Atomization
310.00 kJ/mol
  
34
381.00 kJ/mol
  
23
Standard Molar Entropy
Not Available
  
72.00 J/mol.K
  
12