Template:Infobox iodine

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Iodine, 53I
Template:Infobox element/symbol-to-top-image/alt
Iodine
Pronunciation/ˈ.ədn, -dɪn, -dn/ (EYE-ə-dyne, -din, -deen)
Appearancelustrous metallic gray, violet as a gas
Standard atomic weight Ar, std(I)126.90447(3)[1]
Iodine in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Br

I

At
telluriumiodinexenon
Atomic nummer (Z)53
Groupgroup 17 (halogens)
Periodperiod 5
Blockp-block
Element category  Reactive nonmetal
Electron confeeguration[Kr] 4d10 5s2 5p5
Electrons per shell2, 8, 18, 18, 7
Pheesical properties
Phase at STPsolit
Meltin pynt386.85 K ​(113.7 °C, ​236.66 °F)
Bylin pynt457.4 K ​(184.3 °C, ​363.7 °F)
Density (near r.t.)4.933 g/cm3
Treeple pynt386.65 K, ​12.1 kPa
Creetical pynt819 K, 11.7 MPa
Heat o fusion(I2) 15.52 kJ/mol
Heat o vapourisation(I2) 41.57 kJ/mol
Molar heat capacity(I2) 54.44 J/(mol·K)
Vapour pressur (rhombic)
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 260 282 309 342 381 457
Atomic properties
Oxidation states−1, +1, +3, +4, +5, +6, +7 strangly acidic
ElectronegativityPauling scale: 2.66
Atomic radiusempirical: 140 pm
Covalent radius139±3 pm
Van der Waals radius198 pm
Colour lines in a spectral range
Spectral lines o iodine
Ither properties
Naitural occurrenceprimordial
Creestal structurorthorhombic
Orthorhombic creestal structur for iodine
Thermal conductivity0.449 W/(m·K)
Electrical resistivity1.3×107 Ω·m (at 0 °C)
Magnetic orderindiamagnetic[2]
Bulk modulus7.7 GPa
CAS Nummer7553-56-2
History
DiskiveryBernard Courtois (1811)
First isolationBernard Courtois (1811)
Main isotopes o iodine
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
123I syn 13 h ε, γ 123Te
124I syn 4.176 d ε 124Te
125I syn 59.40 d ε 125Te
127I 100% - (SF)
129I trace 1.57×107 y β 129Xe
131I syn 8.02070 d β, γ 131Xe
135I syn 6.57 h β 135Xe
Decay modes in parentheses are predictit, but hae nae yet been observed
| references
style="text-align:left"|
in calc from C diff report ref
C 113.7
K 386.85 386.8 0.05 delta
F 236.66 236.7 -0.04 delta
WD Edit this at Wikidata
input C: 113.7, K: 386.85, F: 236.66
comment
style="text-align:left"|
in calc from C diff report ref
C 184.3
K 457.4 457.4 0
F 363.7 363.7 0
WD Edit this at Wikidata
input C: 184.3, K: 457.4, F: 363.7
comment

References

Thir references will appear in the airticle, but this list appears anerly on this page.
  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.