Meaning of Hydrogen | Babel Free

Definitions

1. The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
   countable, uncountable
2. An atom of this element.
   countable, uncountable
3. Molecular hydrogen (H₂), a colourless, odourless and flammable gas at room temperature.
   countable, uncountable
4. A molecule of this molecular species.
   countable, uncountable
5. The isotope hydrogen-1 (protium) (symbol H or ¹H), contrasting with deuterium and tritium.
   countable, uncountable
6. A sample of the element or molecule.
   countable, uncountable

Equivalents

Examples

“Our professor then reminded us that a hydrogen ion is merely a proton, and thus we should think about acid-base theory as we consider this problem further.”

“It was an enormous balloon filled with helium, that elemental gas forged from hydrogen in the nuclear furnace of the stars.”

“Each carbon of the ring has one hydrogen attached except for the fourth one, which is bonded to a substituent.”

“A large tank of hydrogen constituted most of the bulk of that rocket.”

“Both hydrogen and deuterium are present in every glass of water that you drink, but the amount of deuterium is rather small.”

“Hydrogen is generally considered to be electronically the same as deuterium. […] In both PdHₓ and PdDₓ […] a resistivity maximum is found near 50 K.”

CEFR level