Thermal Properties of Promethium and Samarium
Specific Heat
0.18 J/(kg K)
  
33
0.20 J/(kg K)
  
31
Molar Heat Capacity
Not Available
  
29.54 J/mol·K
  
7
Thermal Conductivity
17.90 W/m·K
  
99+
13.30 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.00 µm/(m·K)
  
99+
12.70 µm/(m·K)
  
30
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
166.40 kJ/mol
  
99+
Enthalpy of Fusion
7.50 kJ/mol
  
99+
8.62 kJ/mol
  
40
Enthalpy of Atomization
310.00 kJ/mol
  
34
209.00 kJ/mol
  
99+
Standard Molar Entropy
Not Available
  
69.60 J/mol.K
  
15