Thermal Properties of Protactinium and Osmium
Specific Heat
0.12 J/(kg K)
  
40
0.13 J/(kg K)
  
39
Molar Heat Capacity
Not Available
  
24.70 J/mol·K
  
99+
Thermal Conductivity
47.00 W/m·K
  
32
87.60 W/m·K
  
19
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.90 µm/(m·K)
  
40
5.10 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
627.60 kJ/mol
  
7
Enthalpy of Fusion
12.34 kJ/mol
  
28
29.30 kJ/mol
  
4
Enthalpy of Atomization
Not Available
  
669.00 kJ/mol
  
6
Standard Molar Entropy
198.10 J/mol.K
  
1
32.60 J/mol.K
  
99+