eFunda: General Information on Element Potassium
engineering fundamentals Element Information: Potassium
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Potassium
 
19
K
39.0983
 Atomic Number 19
Atomic Weight 39.0983
Electron Config. 2-2-6-2-6-0-1
Electron configuration order: 1s-2s-2p-3s-3p-3d-4s-4p-4d-4f-5s-5p-5d-5f-6s-6p-6d-7s

Mechanical Properties Conditions
Phase Temp. (K) Pressure (Pa)
Density 890 kg/m3 Solid  298.15  0 
Thermal Expansion Coefficient 8.300 × 10-5 /K Solid  293.15  

Electrical Properties Conditions
Temp. (K) Note
Electrical Resistivity 6.150 × 10-8 W-m 273.15  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 336.53 K   101325 
Boiling Temperature 1032.15 K   101325 
Critical Temperature 2210 K    
Fusion Enthalpy 59.3 J/g 0  101325 
Heat Capacity 757 J/kg-K 298.15 more... 100000 
Thermal Conductivity 102.4 W/m-K 300 101325 

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