IZ =  53

From the Greek "iodes", meaning "violet"
(AM) Atomic Mass 126.9045  amu    Oxidation States +1, +3, +5, +7, -1
   (BP) Boiling Point 184.35  °C    (MP) Melting Point 113.5  °C
   (ρ) Density 4.94  g/cm3    Crystal Structure Orthorhombic
   ( χ ) Electronegativity 2.5    (AR) Atomic Radius 1.33  Å
   Physical State Solid (C) Heat Capacity 0.214  J/g °C
Electronic-Config [Kr]  4d10  5s2  5p5     (I1) First Ionization E 1008.36  kJ/mol
   (ΔHvap) Heat of Vaporization 41.57  kJ/mol     (ΔHfus) Heat of Fusion 15.52  kJ/mol
   Year of Discovery 1811    Location of Discovery France
(E°) Standard Potential I2 (s) ⇔ 2 I- (0.540 V)
Stable isotopes  127I
Discovered/Synthesized by Barnard Courtois
Natural Source Isolated from seaweed
Common Uses Disinfectant for wounds & drinking water, added to salt for thyroid disease, photo film
Other Info Responsible for the characteristic smell of seaweeds
Exists in nature as the diatomic molecule I2
Previous Element
Next Element
Back to Table
Common Properties
Home Page