Iodine: Atomic Weight: 126.90447: Group Number: 17: Group Name: Halogen: Period Number: 5: Block: p-block: Ground State Configuration: [Kr] 4d10 5s2 5p5: Ground State Level: 2Po3/2: Standard State: Solid: Common Valences: 1,3,5,7: Bond Length: 266.6: Atomic Radius Empirical: 140: Atomic Radius Calculated: 115: Covalent Radius Empirical: 133: Vander Waals Radius: 198: Electron Affinity: 295.2 The state elements are in at 1 atm and 25 C Learn with flashcards, games, and more — for free. State of a system chosen as standard for reference by convention. Three standard states are recognized: For a gas phase it is the (hypothetical) state of the pure substance in the gaseous phase at the @S05921@ \(p=p^{\,\unicode{x26ac}}\), assuming ideal behaviour. Accidental release measures Personal Precautions Use personal protective equipment. The sum of the oxidation states within a compound … Iodine Safety Data Sheet according to Federal Register / Vol. The iodine-replete healthy adult has about 15–20 mg of iodine, 70%–80% of which is contained in the thyroid [ 6 ]. Although it is less reactive than the elements above it in group 17 (fluorine, chlorine and bromine) it still forms compounds with many other elements. For example, the standard state of carbon, oxygen, sulphur, mercury, bromine, and iodine are: C (graphite), O 2 (g), S 8 (rhombic), Br 2 (l) and I 2 (s) respectively. The detection limit was 0.05 ppm (19) While this testing does not signify NIOSH approval of the cartridge, it can be used to ascertain that personnel will receive certain protection from iodine during sampling activities at a clandestine laboratory, provided the exposures are below the IDLH of 2 ppm. Uncombined elements have an oxidation state of 0. NFPA 6. Although iodine is a non-metal, it displays some metallic properties. Iodine - Iodine - Production and use: Iodine is produced commercially from iodine-containing brines. It is defined as being the charge that an atom would have if all bonds were ionic. Characteristics: Iodine is a bluish-black, lustrous solid. Consider the following half-cell reactions and their standard electrode potentials. Ensure adequate ventilation. Deduce a balanced equation for the overall reaction when the standard nickel and iodine half-cells are connected. (iii) Standard state of elements refers to the pure element in its most stable form at 298 K and 100 kPa pressure. Standard state: iodine: Superconductivity temperature: iodine: Term symbol: iodine: Thermal conductivity: iodine: thermochemistry: iodine: Thermodynamic properties: iodine: Total mass in 70 kg human: iodine: Uses: iodine: valence orbital R(max) iodine: valence s-orbital R(max) iodine: valence p-orbital R(max) iodine: valence d-orbital R(max) Iodine, 0.1N standard solution Revision Date 17-Jan-2018 Hydrogen iodide Protective Equipment and Precautions for Firefighters As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear. 58 / Monday, March 26, 2012 / Rules and Regulations Date of issue: 11/04/2004 Revision … The oxidation state of an atom is a measure of the degree of oxidation of an atom. Median urinary iodine concentrations of 100–199 mcg/L in children and adults, 150–249 mcg/L in pregnant women and >100 mcg/L in lactating women indicate iodine intakes are adequate [ 3 ]. 77, No. [1] a. 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