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The way concept relations are shown:
Hydrogen
Hierarchy: | ∟ ∟ ∟ Hydrogen 76 coordinate concepts3 subordinate concepts∟ Ammonia | ∟ ∟ ∟ Chlorine | ∟ ∟ ∟ Nitrogen | ∟ ∟ ∟ Oxygen | ∟ ∟ ∟ ∟ Arsenic | ∟ Boron | ∟ Carbon | ∟ ∟ ∟ Halogens | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Silicon | ∟ ∟ Acids | ∟ Alkalies | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Elements | ∟ ∟ ∟ Gases | ∟ ∟ ∟ ∟ ∟ Isotopes | ∟ ∟ ∟ ∟ ∟ Metals | ∟ Minerals | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Salts | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Hydrogen 76 coordinate concepts3 subordinate concepts∟ Ammonia | ∟ ∟ ∟ Chlorine | ∟ ∟ ∟ Nitrogen | ∟ ∟ ∟ Oxygen | ∟ ∟ ∟ ∟ Arsenic | ∟ Boron | ∟ Carbon | ∟ ∟ ∟ Halogens | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Silicon | ∟ ∟ Acids | ∟ Alkalies | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Elements | ∟ ∟ ∟ Gases | ∟ ∟ ∟ ∟ ∟ Isotopes | ∟ ∟ ∟ ∟ ∟ Metals | ∟ Minerals | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Salts | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Hydrogen 76 coordinate concepts3 subordinate concepts∟ Ammonia | ∟ ∟ ∟ Chlorine | ∟ ∟ ∟ Nitrogen | ∟ ∟ ∟ Oxygen | ∟ ∟ ∟ ∟ Arsenic | ∟ Boron | ∟ Carbon | ∟ ∟ ∟ Halogens | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Silicon | ∟ ∟ Acids | ∟ Alkalies | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Elements | ∟ ∟ ∟ Gases | ∟ ∟ ∟ ∟ ∟ Isotopes | ∟ ∟ ∟ ∟ ∟ Metals | ∟ Minerals | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ Salts | ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ ∟ |
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Narrower terms: | |
Annotation: | H or H1; H2 or 2H (superscript) = DEUTERIUM, H2 (subscript) = HYDROGEN; H3 or 3H = TRITIUM; prod of H ions = probably PH
X |
Scope note: | Hydrogen. The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight 1. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.
X |
activeMeSHYear*: | |
dateCreated*: | 1999-01-01X |
dateRevised*: | 1993-06-04X |
recordAuthorizer*: | PLSX |
recordMaintainer*: | TPWX |
recordOriginator*: | NLMX |
Type: | |
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URI: | |
Labels and equivalent concepts: | Vety (fi) XH (fi, replaced) Väte (sv) Hydrogenium (la-FI, replaced) |
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