acetic acid acid actinium actinoid algae alkali metal alkaline earth metal aluminium americium ammonia andes angiography antimony argon arsenic astatine atomic number atomic radius barium basal metabolic rate benzene berkelium bernard courtois beryllium beta decay bismuth blood bohrium boiling point boron brine british geological survey brittany bromide bromine bulk modulus cas registry number cadmium caesium caesium iodide calcium california californium cancer carbon carbon disulfide carbon tetrachloride celsius cerium charles bernard desormes chemical element chemical elements data references chemist chile chlorate chlorine chloroform chromium cobalt collective names of groups of like elements color copper cosmic ray cosmic ray spallation counterfeit banknote detection pen covalent radius crystal structure curium darmstadtium day decay energy decay product density diatomic molecule diatrizoic acid diethyl ether digital object identifier dubnium due diligence dye dysprosium einsteinium electrolysis electron electron configuration electron shell electronegativity enthalpy of fusion erbium ethanol europium extinct radionuclide eye fahrenheit fermium fluorine food chain france francium gadolinium gallium germanium gland glycerol goitre gold gold halide greek language gunpowder hafnium half-life halogen halogen lamp hassium helium holmium hormone hour humphry davy hydrazine hydrogen hydrogen iodide hydrogen sulfide hypertension hypothyroidism indium iodate iodide iodine deficiency iodine monochloride iodomethane iodophor ion iridium iron isotope isotopes of iodine japan joseph louis gay-lussac kelp kelvin kidney kombu krypton lanthanoid lanthanum lawrencium lead list of elements by atomic number list of elements by name list of elements by symbol lithium lithium iodide lutetium magnesium manganese manganese dioxide medicine meitnerium melting point mendelevium mental retardation metal metalloid methamphetamine molecule molybdenum muon napoleonic wars national research council natural abundance neodymium neon neptunium neutron nickel niobium niter nitric acid nitrogen nitrogen triiodide nobelium noble gas nonmetal normandy nuclear fission nutrition facts label organic chemistry organoiodine compound osmium oxidation state oxygen p-block palladium periodic table periodic table block phosphorus photography physicist picometre plant platinum plutonium polonium potassium potassium iodide potassium nitrate practical joke praseodymium promethium protactinium protein radiocontrast radiometric dating radium radon redox resistivity rhenium rhodium roentgenium rubidium rubidium iodide ruthenium rutherfordium samarium scandium seaborgium seawater seaweed selenium silicon silver silver iodide sodium sodium carbonate sodium hydroxide sodium iodide solid specific heat capacity stable isotope starch strontium sulfur sulfur dioxide sulfuric acid synthetic radioisotope tsh tantalum technetium tellur tellurium terbium thallium thermal conductivity thorium thulium thyroglobulin thyroid thyroid-stimulating hormone thyroid cancer thyroid hormone thyroxine tin tincture of iodine titanium trace element transition metal triiodide triiodothyronine triple point tungsten tyrosine unbinilium united states ununbium ununennium ununhexium ununoctium ununpentium ununquadium ununseptium ununtrium uranium van der waals radius vanadium vapor pressure wikimedia commons wiktionary xenon year ytterbium yttrium zinc zirconium