Thermal Properties of Potassium and Promethium
Specific Heat
0.75 J/(kg K)
  
6
0.18 J/(kg K)
  
33
Molar Heat Capacity
29.60 J/mol·K
  
6
Not Available
  
Thermal Conductivity
102.50 W/m·K
  
15
17.90 W/m·K
  
99+
Critical Temperature
Not Available
  
Thermal Expansion
83.30 µm/(m·K)
  
3
9.00 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
77.50 kJ/mol
  
99+
Not Available
  
Enthalpy of Fusion
2.32 kJ/mol
  
99+
7.50 kJ/mol
  
99+
Enthalpy of Atomization
89.50 kJ/mol
  
99+
310.00 kJ/mol
  
34
Standard Molar Entropy
64.70 J/mol.K
  
18
Not Available