Thermal Properties of Protactinium and Lanthanum
Specific Heat
0.12 J/(kg K)
  
40
0.19 J/(kg K)
  
32
Molar Heat Capacity
Not Available
  
27.11 J/mol·K
  
21
Thermal Conductivity
47.00 W/m·K
  
32
13.40 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.90 µm/(m·K)
  
40
12.10 µm/(m·K)
  
32
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
399.60 kJ/mol
  
17
Enthalpy of Fusion
12.34 kJ/mol
  
28
6.20 kJ/mol
  
99+
Enthalpy of Atomization
Not Available
  
431.00 kJ/mol
  
16
Standard Molar Entropy
198.10 J/mol.K
  
1
56.90 J/mol.K
  
23