H₂
Diatomic hydrogen gas
H₂ is the chemical formula for molecular hydrogen—two hydrogen atoms bonded together.
This is hydrogen's natural state as a gas, the lightest and most abundant element in the universe.
H₂ is colorless, odorless, and highly flammable: The Hindenburg was filled with H₂.
It's used in fuel cells, petroleum refining, and ammonia production.
Electrochemical power converter
- clean energyPower from sustainable sources
- electrolysisCurrent-induced ionic separation
- renewableCapable of restoration
- zero-emissionProducing no pollutants
combustion · power · vehicle · tank · storage · Hindenburg · rocket propellant · NASA
Bonded atomic group
- diatomicHaving two atoms
- gasFormless, expanding substance
- covalent bondShared-electron atomic link
- elementBasic substance or factor
periodic table · proton · electron · atomic · formula · chemistry · compound · reaction
Removing unwanted elements
- petrochemicalProduct from crude processing
- fertilizerSoil nutrient supplement
- methanolToxic one-carbon alcohol
- desulfurizationRemoving sulfur from substances
fuel cell
Electrochemical power converter
- clean energyPower from sustainable sources
- electrolysisCurrent-induced ionic separation
- renewableCapable of restoration
zero-emission · combustion · power · vehicle · tank · storage · Hindenburg · rocket propellant · NASA
molecule
Bonded atomic group
- diatomicHaving two atoms
- gasFormless, expanding substance
- covalent bondShared-electron atomic link
element · periodic table · proton · electron · atomic · formula · chemistry · compound · reaction · combustion
refining
Removing unwanted elements
- petrochemicalProduct from crude processing
- fertilizerSoil nutrient supplement
- methanolToxic one-carbon alcohol