Thermal Properties of Promethium and Barium
Specific Heat
0.18 J/(kg K)
  
33
0.20 J/(kg K)
  
30
Molar Heat Capacity
Not Available
  
28.07 J/mol·K
  
12
Thermal Conductivity
17.90 W/m·K
  
99+
18.40 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
20.60 µm/(m·K)
  
22
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
140.00 kJ/mol
  
99+
Enthalpy of Fusion
7.50 kJ/mol
  
99+
7.66 kJ/mol
  
99+
Enthalpy of Atomization
310.00 kJ/mol
  
34
175.70 kJ/mol
  
99+
Standard Molar Entropy
Not Available
  
62.50 J/mol.K
  
20