Hydrogen - Wikipedia
Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H 2, sometimes called dihydrogen, [11] but more commonly called hydrogen gas, molecular hydrogen or …
Hydrogen - Element information, properties and uses ...
Element Hydrogen (H), Group 1, Atomic Number 1, s-block, Mass 1.008. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Hydrogen – Atomic Mass – Atomic Weight – H
2020年11月21日 · With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass.
Hydrogen | Properties, Uses, & Facts | Britannica
2024年10月30日 · Although hydrogen is the most abundant element in the universe (three times as abundant as helium, the next most widely occurring element), it makes up only about 0.14 percent of Earth’s crust by weight.
Hydrogen - Periodic Table and Atomic Properties
With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Summary. Atomic Number – Protons, Electrons and Neutrons in Hydrogen.
Hydrogen - NIST Chemistry WebBook
Hydrogen. Formula: H 2. Molecular weight: 2.01588. IUPAC Standard InChI:InChI=1S/H2/h1H Copy. IUPAC Standard InChIKey:UFHFLCQGNIYNRP-UHFFFAOYSA-N Copy. CAS Registry Number: 1333-74-0. Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file The 3d structure may be viewed using Java or Javascript.
Hydrogen (H) - Periodic Table
With an atomic weight of 1.00794 u, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Read more on Wikipedia. Physical properties. Thermal properties. Atomic properties. Electron configuration for hydrogen.