Thermal Properties of Protactinium and Potassium
Specific Heat
0.12 J/(kg K)
  
40
0.75 J/(kg K)
  
6
Molar Heat Capacity
Not Available
  
29.60 J/mol·K
  
6
Thermal Conductivity
47.00 W/m·K
  
32
102.50 W/m·K
  
15
Critical Temperature
Not Available
  
Thermal Expansion
9.90 µm/(m·K)
  
40
83.30 µm/(m·K)
  
3
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
77.50 kJ/mol
  
99+
Enthalpy of Fusion
12.34 kJ/mol
  
28
2.32 kJ/mol
  
99+
Enthalpy of Atomization
Not Available
  
89.50 kJ/mol
  
99+
Standard Molar Entropy
198.10 J/mol.K
  
1
64.70 J/mol.K
  
18