Thermal Properties of Promethium and Gold
Specific Heat
0.18 J/(kg K)
  
33
0.13 J/(kg K)
  
39
Molar Heat Capacity
Not Available
  
25.42 J/mol·K
  
40
Thermal Conductivity
17.90 W/m·K
  
99+
318.00 W/m·K
  
3
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
14.20 µm/(m·K)
  
26
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
324.40 kJ/mol
  
27
Enthalpy of Fusion
7.50 kJ/mol
  
99+
12.55 kJ/mol
  
27
Enthalpy of Atomization
310.00 kJ/mol
  
34
364.00 kJ/mol
  
25
Standard Molar Entropy
Not Available
  
47.40 J/mol.K
  
32