ChemistFella

Iodine (I)

Used to clean cuts and scrapes. It turns purple as a gas.

Mix Iodine in the lab 🧪

Iodine facts

Symbol
I
Atomic number
53
Atomic mass
126.9
Family
Halogens
Period
5
Group
17

Famous reactions with iodine

What does iodine react with?

Iodine makes a new substance with 76 other elements and chemicals in our lab:

  • Iodine + HydrogenHydrogen iodide H₂ + I₂ → 2HI · When heated · Try it
  • Iodine + LithiumLithium iodide 2Li + I₂ → 2LiI · At room temperature · Try it
  • Iodine + BerylliumBeryllium iodide Be + I₂ → BeI₂ · When heated · Try it
  • Iodine + BoronBoron triiodide 2B + 3I₂ → 2BI₃ · Only when heated very strongly · Try it
  • Iodine + FluorineIodine pentafluoride I₂ + 5F₂ → 2IF₅ · At room temperature · Try it
  • Iodine + SodiumSodium iodide 2Na + I₂ → 2NaI · At room temperature · Try it
  • Iodine + MagnesiumMagnesium iodide Mg + I₂ → MgI₂ · At room temperature · Try it
  • Iodine + SiliconSilicon tetraiodide Si + 2I₂ → SiI₄ · Only when heated very strongly · Try it
  • Iodine + PhosphorusPhosphorus triiodide 2P + 3I₂ → 2PI₃ · At room temperature · Try it
  • Iodine + ChlorineIodine monochloride I₂ + Cl₂ → 2ICl · At room temperature · Try it
  • Iodine + PotassiumPotassium iodide 2K + I₂ → 2KI · At room temperature · Try it
  • Iodine + CalciumCalcium iodide Ca + I₂ → CaI₂ · At room temperature · Try it
  • Iodine + ScandiumScandium iodide 2Sc + 3I₂ → 2ScI₃ · When heated · Try it
  • Iodine + TitaniumTitanium(IV) iodide Ti + 2I₂ → TiI₄ · When heated · Try it
  • Iodine + VanadiumVanadium(III) iodide 2V + 3I₂ → 2VI₃ · When heated · Try it
  • Iodine + ChromiumChromium(III) iodide 2Cr + 3I₂ → 2CrI₃ · When heated · Try it
  • Iodine + ManganeseManganese(II) iodide Mn + I₂ → MnI₂ · When heated · Try it
  • Iodine + IronIron(II) iodide Fe + I₂ → FeI₂ · When heated · Try it
  • Iodine + CobaltCobalt(II) iodide Co + I₂ → CoI₂ · When heated · Try it
  • Iodine + NickelNickel(II) iodide Ni + I₂ → NiI₂ · When heated · Try it
  • Iodine + CopperCopper(I) iodide 2Cu + I₂ → 2CuI · When heated · Try it
  • Iodine + ZincZinc iodide Zn + I₂ → ZnI₂ · When heated · Try it
  • Iodine + GalliumGallium iodide 2Ga + 3I₂ → 2GaI₃ · When heated · Try it
  • Iodine + GermaniumGermanium iodide Ge + 2I₂ → GeI₄ · When heated · Try it
  • Iodine + ArsenicArsenic triiodide 2As + 3I₂ → 2AsI₃ · When heated · Try it
  • Iodine + BromineIodine monobromide I₂ + Br₂ → 2IBr · At room temperature · Try it
  • Iodine + RubidiumRubidium iodide 2Rb + I₂ → 2RbI · At room temperature · Try it
  • Iodine + StrontiumStrontium iodide Sr + I₂ → SrI₂ · At room temperature · Try it
  • Iodine + YttriumYttrium iodide 2Y + 3I₂ → 2YI₃ · When heated · Try it
  • Iodine + ZirconiumZirconium iodide Zr + 2I₂ → ZrI₄ · When heated · Try it
  • Iodine + NiobiumNiobium iodide 2Nb + 5I₂ → 2NbI₅ · When heated · Try it
  • Iodine + MolybdenumMolybdenum(III) iodide 2Mo + 3I₂ → 2MoI₃ · When heated · Try it
  • Iodine + PalladiumPalladium(II) iodide Pd + I₂ → PdI₂ · When heated · Try it
  • Iodine + SilverSilver iodide 2Ag + I₂ → 2AgI · When heated · Try it
  • Iodine + CadmiumCadmium iodide Cd + I₂ → CdI₂ · When heated · Try it
  • Iodine + IndiumIndium iodide 2In + 3I₂ → 2InI₃ · When heated · Try it
  • Iodine + TinTin(IV) iodide Sn + 2I₂ → SnI₄ · When heated · Try it
  • Iodine + AntimonyAntimony(III) iodide 2Sb + 3I₂ → 2SbI₃ · When heated · Try it
  • Iodine + TelluriumTellurium tetraiodide Te + 2I₂ → TeI₄ · When heated · Try it
  • Iodine + CaesiumCaesium iodide 2Cs + I₂ → 2CsI · At room temperature · Try it
  • Iodine + BariumBarium iodide Ba + I₂ → BaI₂ · At room temperature · Try it
  • Iodine + LanthanumLanthanum iodide 2La + 3I₂ → 2LaI₃ · When heated · Try it
  • Iodine + CeriumCerium(III) iodide 2Ce + 3I₂ → 2CeI₃ · When heated · Try it
  • Iodine + PraseodymiumPraseodymium iodide 2Pr + 3I₂ → 2PrI₃ · When heated · Try it
  • Iodine + NeodymiumNeodymium iodide 2Nd + 3I₂ → 2NdI₃ · When heated · Try it
  • Iodine + PromethiumPromethium iodide 2Pm + 3I₂ → 2PmI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + SamariumSamarium(III) iodide 2Sm + 3I₂ → 2SmI₃ · When heated · Try it
  • Iodine + EuropiumEuropium(II) iodide Eu + I₂ → EuI₂ · At room temperature · Try it
  • Iodine + GadoliniumGadolinium iodide 2Gd + 3I₂ → 2GdI₃ · When heated · Try it
  • Iodine + TerbiumTerbium iodide 2Tb + 3I₂ → 2TbI₃ · When heated · Try it
  • Iodine + DysprosiumDysprosium iodide 2Dy + 3I₂ → 2DyI₃ · When heated · Try it
  • Iodine + HolmiumHolmium iodide 2Ho + 3I₂ → 2HoI₃ · When heated · Try it
  • Iodine + ErbiumErbium iodide 2Er + 3I₂ → 2ErI₃ · When heated · Try it
  • Iodine + ThuliumThulium iodide 2Tm + 3I₂ → 2TmI₃ · When heated · Try it
  • Iodine + YtterbiumYtterbium(III) iodide 2Yb + 3I₂ → 2YbI₃ · When heated · Try it
  • Iodine + LutetiumLutetium iodide 2Lu + 3I₂ → 2LuI₃ · When heated · Try it
  • Iodine + HafniumHafnium iodide Hf + 2I₂ → HfI₄ · When heated · Try it
  • Iodine + TantalumTantalum iodide 2Ta + 5I₂ → 2TaI₅ · When heated · Try it
  • Iodine + GoldGold(I) iodide 2Au + I₂ → 2AuI · When heated · Try it
  • Iodine + MercuryMercury(II) iodide Hg + I₂ → HgI₂ · When heated · Try it
  • Iodine + ThalliumThallium(I) iodide 2Tl + I₂ → 2TlI · When heated · Try it
  • Iodine + LeadLead(II) iodide Pb + I₂ → PbI₂ · When heated · Try it
  • Iodine + BismuthBismuth(III) iodide 2Bi + 3I₂ → 2BiI₃ · When heated · Try it
  • Iodine + PoloniumPolonium(IV) iodide Po + 2I₂ → PoI₄ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + RadiumRadium iodide Ra + I₂ → RaI₂ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + ActiniumActinium iodide 2Ac + 3I₂ → 2AcI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + ThoriumThorium iodide Th + 2I₂ → ThI₄ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + ProtactiniumProtactinium iodide 2Pa + 5I₂ → 2PaI₅ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + UraniumUranium(III) iodide 2U + 3I₂ → 2UI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + NeptuniumNeptunium(III) iodide 2Np + 3I₂ → 2NpI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + PlutoniumPlutonium(III) iodide 2Pu + 3I₂ → 2PuI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + AmericiumAmericium iodide 2Am + 3I₂ → 2AmI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + CuriumCurium iodide 2Cm + 3I₂ → 2CmI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + BerkeliumBerkelium iodide 2Bk + 3I₂ → 2BkI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + CaliforniumCalifornium iodide 2Cf + 3I₂ → 2CfI₃ · Only in a special nuclear lab (it is radioactive) · Try it
  • Iodine + EinsteiniumEinsteinium iodide 2Es + 3I₂ → 2EsI₃ · Only in a special nuclear lab (it is radioactive) · Try it

Nothing happens when it's simply mixed with 21 of the others. 21 pairings have never been tried, because not enough atoms have ever existed.