Thermal Properties of Protactinium and Technetium
Specific Heat
0.12 J/(kg K)
  
40
0.21 J/(kg K)
  
29
Molar Heat Capacity
Not Available
  
24.27 J/mol·K
  
99+
Thermal Conductivity
47.00 W/m·K
  
32
50.60 W/m·K
  
30
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.90 µm/(m·K)
  
40
7.10 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
660.00 kJ/mol
  
6
Enthalpy of Fusion
12.34 kJ/mol
  
28
23.01 kJ/mol
  
9
Enthalpy of Atomization
Not Available
  
649.00 kJ/mol
  
8
Standard Molar Entropy
198.10 J/mol.K
  
1
181.10 J/mol.K
  
2