Thermal Properties of Promethium and Gadolinium
Specific Heat
0.18 J/(kg K)
  
33
0.23 J/(kg K)
  
27
Molar Heat Capacity
Not Available
  
37.03 J/mol·K
  
2
Thermal Conductivity
17.90 W/m·K
  
99+
10.60 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
9.40 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
359.40 kJ/mol
  
21
Enthalpy of Fusion
7.50 kJ/mol
  
99+
10.05 kJ/mol
  
36
Enthalpy of Atomization
310.00 kJ/mol
  
34
352.00 kJ/mol
  
27
Standard Molar Entropy
Not Available
  
68.10 J/mol.K
  
16