Thermal Properties of Protactinium and Iridium
Specific Heat
0.12 J/(kg K)
  
40
0.13 J/(kg K)
  
39
Molar Heat Capacity
Not Available
  
25.10 J/mol·K
  
99+
Thermal Conductivity
47.00 W/m·K
  
32
147.00 W/m·K
  
10
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.90 µm/(m·K)
  
40
6.40 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
799.10 kJ/mol
  
1
Enthalpy of Fusion
12.34 kJ/mol
  
28
35.23 kJ/mol
  
1
Enthalpy of Atomization
Not Available
  
837.00 kJ/mol
  
1
Standard Molar Entropy
198.10 J/mol.K
  
1
35.50 J/mol.K
  
99+