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Top Terms > Materials > Classes of materials > Chemicals > Chemical elements > Chemical elements by group and name > Group I elements > Hydrogen

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Hydrogen (Rbcefbd)

Definition
Nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe. (Source: wordnet.princeton.edu)
Broader Term
Group I elements (Rbcefb)
Narrower Terms
Deuterium (Rbcefbdd)
Tritium (Rbcefbdt)
Related Terms (Hierarchical)
Lithium (Rbcefbm)
Sodium (Rbcefbs)