eFunda: General Information on Element Osmium
engineering fundamentals Element Information: Osmium
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Osmium
76
Os
190.23
Atomic Number 76
Atomic Weight 190.23
Electron Config. 2-2-6-2-6-10-2-6-10-14-2-6-6-0-2
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 22590 kg/m3 Solid  298.15 
Modulus of Elasticity 558.476 GPa Solid  0   
Poisson Ratio 0.25 Solid     
Thermal Expansion Coefficient 5.100 /K Solid  298.15  

Electrical Properties Conditions
Temp. (K) Note
Electrical Resistivity 9.500 W-m 293.15  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature 3306.15 K   101325 
Boiling Temperature 5285.15 K   101325 
Critical Temperature 12700 K    
Fusion Enthalpy 304.2 J/g 101325 
Heat Capacity 130 J/kg-K 298.149993896 100000 
Thermal Conductivity 87.6 W/m-K 300 101325 

 
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