eFunda: General Information on Element Rubidium
engineering fundamentals Element Information: Rubidium
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Rubidium
 
37
Rb
85.4678
 Atomic Number 37
Atomic Weight 85.4678
Electron Config. 2-2-6-2-6-10-2-6-0-0-1
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 1530 kg/m3 Solid  298.15  0 
Thermal Expansion Coefficient 9.000 × 10-5 /K Solid  293.15  

Electrical Properties Conditions
Temp. (K) Note
Electrical Resistivity 1.250 × 10-7 W-m 293.15  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 312.46 K   101325 
Boiling Temperature 961.15 K   101325 
Critical Temperature 2070 K    
Fusion Enthalpy 25.6 J/g 0  101325 
Heat Capacity 363 J/kg-K 298.15 100000 
Thermal Conductivity 58.2 W/m-K 300 101325 

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