Thermal Properties of Promethium and Copper
Specific Heat
0.18 J/(kg K)
  
33
0.38 J/(kg K)
  
15
Molar Heat Capacity
Not Available
  
24.44 J/mol·K
  
99+
Thermal Conductivity
17.90 W/m·K
  
99+
401.00 W/m·K
  
2
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
16.50 µm/(m·K)
  
25
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
283.70 kJ/mol
  
33
Enthalpy of Fusion
7.50 kJ/mol
  
99+
7.11 kJ/mol
  
99+
Enthalpy of Atomization
310.00 kJ/mol
  
34
338.90 kJ/mol
  
29
Standard Molar Entropy
Not Available
  
33.20 J/mol.K
  
99+