Concept information
Preferred term
HYDROGEN COMPOUNDS
Definition
- Hydrogen (H) is the lightest and most abundant chemical element. It is only found in trace quantities in the atmosphere. (en)
Broader concept
Narrower concepts
- DEUTERIUM OXIDE/HEAVY WATER (en)
- HYDROGEN-DEUTERIUM OXIDE (en)
- HYDROGEN OXIDES (en)
- HYDROPEROXY (en)
- HYDROXYL (en)
- MOLECULAR HYDROGEN (en)
Change note
- 2020-10-16 11:48:36.0 [sritz] Insert Concept add narrower relation (HYDROGEN COMPOUNDS [d8dcfd36-f71c-499f-84f5-43da9fee26c5,84299] - Hydrogen-Deuterium Oxide [f259ddd3-87d3-4a2f-b39d-ed3cce629f3d,560737]);
- 2020-10-16 12:40:16.0 [sritz] Insert Concept add narrower relation (HYDROGEN COMPOUNDS [d8dcfd36-f71c-499f-84f5-43da9fee26c5,84299] - DEUTERIUM OXIDE/HEAVY WATER [4904a081-ffb5-430c-b659-08cd55d41818,560745]);
- 2021-02-26 09:24:20.0 [tstevens] Insert Concept add narrower relation (HYDROGEN COMPOUNDS [d8dcfd36-f71c-499f-84f5-43da9fee26c5,84299] - HYDROGEN OXIDES [3a79e7ec-4ab3-44c6-84bd-d0a67788453f,560869]);
URI
https://gcmd.earthdata.nasa.gov/kms/concept/d8dcfd36-f71c-499f-84f5-43da9fee26c5
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