Thermal Properties of Promethium and Technetium
Specific Heat
0.18 J/(kg K)
  
33
0.21 J/(kg K)
  
29
Molar Heat Capacity
Not Available
  
24.27 J/mol·K
  
99+
Thermal Conductivity
17.90 W/m·K
  
99+
50.60 W/m·K
  
30
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
7.10 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
660.00 kJ/mol
  
6
Enthalpy of Fusion
7.50 kJ/mol
  
99+
23.01 kJ/mol
  
9
Enthalpy of Atomization
310.00 kJ/mol
  
34
649.00 kJ/mol
  
8
Standard Molar Entropy
Not Available
  
181.10 J/mol.K
  
2