Thermal Properties of Lead and Promethium
Specific Heat
0.13 J/(kg K)
  
39
0.18 J/(kg K)
  
33
Molar Heat Capacity
26.65 J/mol·K
  
26
Not Available
  
Thermal Conductivity
35.30 W/m·K
  
38
17.90 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
28.90 µm/(m·K)
  
13
9.00 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
179.40 kJ/mol
  
99+
Not Available
  
Enthalpy of Fusion
4.77 kJ/mol
  
99+
7.50 kJ/mol
  
99+
Enthalpy of Atomization
194.60 kJ/mol
  
99+
310.00 kJ/mol
  
34
Standard Molar Entropy
64.80 J/mol.K
  
17
Not Available