eFunda: General Information on Element Promethium
engineering fundamentals Element Information: Promethium
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Promethium
61
Pm
[145]
Atomic Number 61
Atomic Weight [145]
Electron Config. 2-2-6-2-6-10-2-6-10-5-2-6-0-0-2
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 7260 kg/m3 Solid  298.15 
Poisson Ratio 0.28 Solid     
Thermal Expansion Coefficient 1.100 /K Solid  298.15  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 1315.15 K   101325 
Boiling Temperature 3273.15 K   101325 
Thermal Conductivity 15 W/m-K 300 101325 

 
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