Thermal Properties of Thorium and Protactinium
Specific Heat
0.12 J/(kg K)
  
40
0.12 J/(kg K)
  
40
Molar Heat Capacity
26.23 J/mol·K
  
30
Not Available
  
Thermal Conductivity
54.00 W/m·K
  
28
47.00 W/m·K
  
32
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
11.00 µm/(m·K)
  
36
9.90 µm/(m·K)
  
40
Enthalpy
  
  
Enthalpy of Vaporization
429.00 kJ/mol
  
15
Not Available
  
Enthalpy of Fusion
15.48 kJ/mol
  
19
12.34 kJ/mol
  
28
Enthalpy of Atomization
468.60 kJ/mol
  
15
Not Available
  
Standard Molar Entropy
27.30 J/mol.K
  
99+
198.10 J/mol.K
  
1