Thermal Properties of Promethium and Plutonium
Specific Heat
0.18 J/(kg K)
  
33
0.13 J/(kg K)
  
39
Molar Heat Capacity
Not Available
  
35.50 J/mol·K
  
3
Thermal Conductivity
17.90 W/m·K
  
99+
6.74 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
46.70 µm/(m·K)
  
6
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
344.00 kJ/mol
  
25
Enthalpy of Fusion
7.50 kJ/mol
  
99+
2.82 kJ/mol
  
99+
Enthalpy of Atomization
310.00 kJ/mol
  
34
360.00 kJ/mol
  
26
Standard Molar Entropy
Not Available
  
Not Available