Period 1 Period 2 Period 3 Period 4 Period 5 Period 6 The S Orbital The P Orbital The D Orbital The F Orbital Transition Elements Lanthanide Series Actinide Series Multivalence1 Multivalence2 Rota Period I II III IV V VI VII VIII 1+ 2+ 3+ 4+ 5+ 6+ 7+ 8+ 3- 2- 1- 0 H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn * * * Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db The Shovel About the Rota Period Rota Period Explained (pdf) Rota Period Abstract Published in JSE (pdf) Atomic Radius, Electronegativity, Electropositivity, First Ionization Energy, Mass + Z, Metallic Properties and Oxidation State Trends Links Contact me *** Iron (Fe) is an example of how multi valence elements are displayed. © 2007 James L. Rota, Rotaperiod.com

I - Iodine Atomic Number: 53 Atomic Weight (Mass): 126.90450 Melting Point: 29 °C Boiling Point: 678 °C Orbital Class: 5p Orbital: [Kr] 4d10 5s2 5p5 Class: Halogens Electronegativity: Density: Van der Waals Radius: 198.pm Ionic Radius: 133.1.pm First Ionization Energy: Second Ionization Energy: Third Ionization Energy: Heat of Fusion: Heat of Vaporization: Heat of Atomization: Electrical Conductivity: Thermal Conductivity: Related To: F, Cl, Br, I, At, Valences I II III IV V VI VII VIII 1+ 2+ 3+ 4+ 5+ 6+ 7+ 8+ 3- 2- 1- 0 * * * * I Iodine it forms compounds with many elements, but is less active than the other halogens, which displace it from iodides. Iodine exhibits some metallic-like properties. It dissolves readily in chloroform, carbon tetrachloride, or carbon disulfide to form purple solutions. It is only slightly soluble in water. Iodine compounds are important in organic chemistry and very useful in medicine. Iodides, and thyroxine which contains iodine, are used internally in medicine. Potassium iodide finds use in photography. The deep blue color with starch solution is characteristic of the free element. Iodine is a Block P, Group 17, Period 5 element. The electronic configuration is [Kr] 4d10 5s2 5p5. In its elemental form iodine's CAS number is 7553-56-2. The iodine atom has a radius of 133.1.pm and it's Van der Waals radius is 198.pm. This element can be purchased in a variety of forms including as metal, compounds, ultra high purity, nanoparticles, and isotopes at www.americanelements.com Reproduced With Permission: www.americanelements.com ####### Click Here For More Information About Iodine: Wikipedia.org Home © 2007 Rotaperiod.com