Thermal Properties of Protactinium and Polonium
Specific Heat
0.12 J/(kg K)
  
40
0.12 J/(kg K)
  
40
Molar Heat Capacity
Not Available
  
26.40 J/mol·K
  
28
Thermal Conductivity
47.00 W/m·K
  
32
20.00 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.90 µm/(m·K)
  
40
23.50 µm/(m·K)
  
16
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
60.30 kJ/mol
  
99+
Enthalpy of Fusion
12.34 kJ/mol
  
28
13.00 kJ/mol
  
26
Enthalpy of Atomization
Not Available
  
134.00 kJ/mol
  
99+
Standard Molar Entropy
198.10 J/mol.K
  
1
Not Available