Hydrogen Definition
hydrogen
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English
| Chemical element | |
|---|---|
| H | |
| Next: helium (He) | |
Etymology
From French hydrogène, coined by Louis-Bernard Guyton de Morveau, from Ancient Greek ὕδωρ (hudōr, “water”) + γεννάω (gennaō, “I bring forth”).
Pronunciation
Noun
hydrogen (plural hydrogens)
Wikipedia has an article on: Hydrogen- The lightest chemical element (symbol H) with an atomic number of 1 and atomic weight of 1.00794.
- Molecular hydrogen (H2), a colourless, odourless and flammable gas at room temperature.
- An atom of the element.
- A sample of the element.
Derived terms
terms derived from hydrogenRelated terms
terms related to hydrogen
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Synonyms
- E949 when used as a packaging agent
Hyponyms
Danish
Noun
hydrogen n. (singular definite hydrogenet, not used in plural form)
Synonyms
- brint c.
Norwegian
Noun
hydrogen n.
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Hydrogen ( / ˈ h aɪ d r ɵ dʒ ɨ n / HY-drə-jin) is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Non-remnant stars are mainly composed of hydrogen in its plasma state. Naturally occurring elemental hydrogen is relatively rare on Earth.
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