Hydrogen (H)
The lightest element in the universe. Stars are mostly made of it!
Hydrogen facts
- Symbol
- H
- Atomic number
- 1
- Atomic mass
- 1.008
- Family
- Nonmetals
- Period
- 1
- Group
- 1
Famous reactions with hydrogen
- Feeding the world! Nitrogen meets HydrogenAmmonia N₂ + 3H₂ → 2NH₃ · In a factory, with high pressure and a catalyst · Try it
- BANG! You made Water!Water 2H₂ + O₂ → 2H₂O · With a spark or a flame · Try it
- Instant BANG! Hydrogen meets FluorineHydrogen fluoride H₂ + F₂ → 2HF · At room temperature · Try it
- Snap! You made Hydrogen ChlorideHydrogen chloride H₂ + Cl₂ → 2HCl · In sunlight or bright light · Try it
- A metal sponge! Palladium meets HydrogenPalladium hydride 2Pd + H₂ → 2PdH · At room temperature · Try it
What does hydrogen react with?
Hydrogen makes a new substance with 35 other elements and chemicals in our lab:
- Hydrogen + LithiumLithium hydride 2Li + H₂ → 2LiH · When heated · Try it
- Hydrogen + SodiumSodium hydride 2Na + H₂ → 2NaH · When heated · Try it
- Hydrogen + MagnesiumMagnesium hydride Mg + H₂ → MgH₂ · When heated · Try it
- Hydrogen + SulfurHydrogen sulfide H₂ + S → H₂S · When heated · Try it
- Hydrogen + PotassiumPotassium hydride 2K + H₂ → 2KH · When heated · Try it
- Hydrogen + CalciumCalcium hydride Ca + H₂ → CaH₂ · When heated · Try it
- Hydrogen + ScandiumScandium hydride Sc + H₂ → ScH₂ · When heated · Try it
- Hydrogen + TitaniumTitanium hydride Ti + H₂ → TiH₂ · When heated · Try it
- Hydrogen + SeleniumHydrogen selenide H₂ + Se → H₂Se · When heated · Try it
- Hydrogen + BromineHydrogen bromide H₂ + Br₂ → 2HBr · When heated · Try it
- Hydrogen + RubidiumRubidium hydride 2Rb + H₂ → 2RbH · When heated · Try it
- Hydrogen + StrontiumStrontium hydride Sr + H₂ → SrH₂ · When heated · Try it
- Hydrogen + YttriumYttrium hydride Y + H₂ → YH₂ · When heated · Try it
- Hydrogen + ZirconiumZirconium hydride Zr + H₂ → ZrH₂ · When heated · Try it
- Hydrogen + IodineHydrogen iodide H₂ + I₂ → 2HI · When heated · Try it
- Hydrogen + CaesiumCaesium hydride 2Cs + H₂ → 2CsH · When heated · Try it
- Hydrogen + BariumBarium hydride Ba + H₂ → BaH₂ · When heated · Try it
- Hydrogen + LanthanumLanthanum hydride La + H₂ → LaH₂ · When heated · Try it
- Hydrogen + CeriumCerium hydride Ce + H₂ → CeH₂ · When heated · Try it
- Hydrogen + PraseodymiumPraseodymium hydride Pr + H₂ → PrH₂ · When heated · Try it
- Hydrogen + NeodymiumNeodymium hydride Nd + H₂ → NdH₂ · When heated · Try it
- Hydrogen + SamariumSamarium hydride Sm + H₂ → SmH₂ · When heated · Try it
- Hydrogen + EuropiumEuropium hydride Eu + H₂ → EuH₂ · When heated · Try it
- Hydrogen + GadoliniumGadolinium hydride Gd + H₂ → GdH₂ · When heated · Try it
- Hydrogen + TerbiumTerbium hydride Tb + H₂ → TbH₂ · When heated · Try it
- Hydrogen + DysprosiumDysprosium hydride Dy + H₂ → DyH₂ · When heated · Try it
- Hydrogen + HolmiumHolmium hydride Ho + H₂ → HoH₂ · When heated · Try it
- Hydrogen + ErbiumErbium hydride Er + H₂ → ErH₂ · When heated · Try it
- Hydrogen + ThuliumThulium hydride Tm + H₂ → TmH₂ · When heated · Try it
- Hydrogen + YtterbiumYtterbium hydride Yb + H₂ → YbH₂ · When heated · Try it
- Hydrogen + LutetiumLutetium hydride Lu + H₂ → LuH₂ · When heated · Try it
- Hydrogen + HafniumHafnium hydride Hf + H₂ → HfH₂ · When heated · Try it
- Hydrogen + ThoriumThorium hydride Th + H₂ → ThH₂ · Only in a special nuclear lab (it is radioactive) · Try it
- Hydrogen + UraniumUranium hydride 2U + 3H₂ → 2UH₃ · Only in a special nuclear lab (it is radioactive) · Try it
- Hydrogen + PlutoniumPlutonium hydride Pu + H₂ → PuH₂ · Only in a special nuclear lab (it is radioactive) · Try it
Nothing happens when it's simply mixed with 58 of the others. 21 pairings have never been tried, because not enough atoms have ever existed.