eFunda: General Information on Element Cesium
engineering fundamentals Element Information: Cesium
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Cesium
55
Cs
132.905
Atomic Number 55
Atomic Weight 132.905
Electron Config. 2-2-6-2-6-10-2-6-10-0-2-6-0-0-1
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 1930 kg/m3 Solid  298.15 
Thermal Expansion Coefficient 9.700 /K Solid  298.15  

Electrical Properties Conditions
Temp. (K) Note
Electrical Resistivity 2.000 W-m 293.15  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 301.59 K   101325 
Boiling Temperature 944.15 K   101325 
Critical Temperature 2015 K    
Fusion Enthalpy 15.8 J/g 101325 
Heat Capacity 242 J/kg-K 298.149993896 100000 
Thermal Conductivity 35.9 W/m-K 300 101325 

 
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