hydrogens
/HH AY1 D R AH0 JH AH0 N Z/noun
- 1
The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.
- 2
Molecular hydrogen (H₂), a colourless, odourless and flammable gas at room temperature.
- 3
An atom of the element.
- 4
The isotope hydrogen-1 (protium) (symbol H or ¹H), contrasting with deuterium and tritium
- 5
A molecule of this molecular species
- 6
A sample of the element/molecule.
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