Thermal Properties of Neptunium and Plutonium
Specific Heat
0.12 J/(kg K)
  
40
0.13 J/(kg K)
  
39
Molar Heat Capacity
29.46 J/mol·K
  
8
35.50 J/mol·K
  
3
Thermal Conductivity
6.30 W/m·K
  
99+
6.74 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
Not Available
  
46.70 µm/(m·K)
  
6
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
344.00 kJ/mol
  
25
Enthalpy of Fusion
3.20 kJ/mol
  
99+
2.82 kJ/mol
  
99+
Enthalpy of Atomization
Not Available
  
360.00 kJ/mol
  
26
Standard Molar Entropy
Not Available
  
Not Available