Thermal Properties of Promethium and Platinum
Specific Heat
0.18 J/(kg K)
  
33
0.13 J/(kg K)
  
39
Molar Heat Capacity
Not Available
  
25.86 J/mol·K
  
35
Thermal Conductivity
17.90 W/m·K
  
99+
71.60 W/m·K
  
24
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
8.80 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
510.50 kJ/mol
  
11
Enthalpy of Fusion
7.50 kJ/mol
  
99+
19.70 kJ/mol
  
12
Enthalpy of Atomization
310.00 kJ/mol
  
34
565.00 kJ/mol
  
11
Standard Molar Entropy
Not Available
  
41.60 J/mol.K
  
36