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IODINE (53I126.9045)

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The least reactive of the halogens, iodine is a bluish-black, diatomics, lustrous solid, volatilizing at room temperature into a blue-violet gas with a distinctive odor. Iodine exhibits some metal-like properties. It is used in a wide variety of applications including dyes, photography, and medicines. It combines with many elements to form a variety of compounds.

Property Name Property Value Property Name Property Value
Atomic Code (53I126.9045) Atomic Volume 25.7W/D
CAS # 7553-56-2 First Ionization Energy 241K-cal/g-mole
Electronegativity 2.5Pauling's
Melting Point 113.7°C Covalent Radius 1.33Angstroms
Boiling Point 185°C Cubic Coefficient of Expansion @ 20°C 2.81x10-6K-1
Density 4.93g/cm3 Electrical Resistivity @ 25°C 5.85x106µΩ-cm
Themal Conductivity 10.4x10-4cal/cm2/cm/s/°C Crystal Structure Orthorhombic
Specific Heat @ 25°C 0.052cal/g°C Critical Temperature 553°C
Heat of Fusion 14.85cal/g Critical Pressure 116atm
Heat of Vaporization 39.28cal/g Vapor Pressure @ 25°C 0.31mmHg


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