A table in which the chemical elements are arranged in order of increasing atomic number. Elements with similar properties are arranged in the same column (called a group), and elements with the same number of electron shells are arranged in the same row (called a period).
Any of the speech sounds that this letter represents, as, in English, the (h) of hat
a 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
Find another word for hydrogen. In this page you can discover 19 synonyms, antonyms, idiomatic expressions, and related words for hydrogen, like: periodic-table, h, atomic number 1, proton, ion, electron, molecule, atom, bromine, methanol and ethene.