eFunda: General Information on Element Iodine
engineering fundamentals Element Information: Iodine
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Iodine
 
53
I
126.90447
 Atomic Number 53
Atomic Weight 126.90447
Electron Config. 2-2-6-2-6-10-2-6-10-0-2-5
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 (I2) 4940 kg/m3 Solid  0  0 
Thermal Expansion Coefficient (I2) 9.300 × 10-5 /K Solid  293.15  

Electrical Properties Conditions
Temp. (K) Note
Electrical Resistivity (I2) 1.300 × 107 W-m  

Thermal Properties Conditions
Temp. (K) Pressure (Pa)
Melting Temperature (I2) 386.85 K   101325 
Boiling Temperature (I2) 457.55 K   101325 
Critical Temperature (I2) 819.15 K    
Fusion Enthalpy (I2) 125 J/g 0  101325 
Vaporization Enthalpy (I2) 163.78 J/g 0  101325 
Heat Capacity (I2) 145 J/kg-K 298.15 more... 100000 

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