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