Thermal Properties of Tantalum and Protactinium
Specific Heat
0.14 J/(kg K)
  
37
0.12 J/(kg K)
  
40
Molar Heat Capacity
25.36 J/mol·K
  
99+
Not Available
  
Thermal Conductivity
57.50 W/m·K
  
27
47.00 W/m·K
  
32
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
6.30 µm/(m·K)
  
99+
9.90 µm/(m·K)
  
40
Enthalpy
  
  
Enthalpy of Vaporization
753.10 kJ/mol
  
2
Not Available
  
Enthalpy of Fusion
31.40 kJ/mol
  
3
12.34 kJ/mol
  
28
Enthalpy of Atomization
782.00 kJ/mol
  
3
Not Available
  
Standard Molar Entropy
41.50 J/mol.K
  
37
198.10 J/mol.K
  
1