Hydrogen - Wikipedia
WebHydrogen 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, but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen.
Hydrogen | Properties, Uses, & Facts | Britannica
Web6 days ago · Hydrogen, a colorless, odorless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The earliest known chemical property of hydrogen is that it burns with oxygen to form water; indeed, the name hydrogen is derived from Greek words meaning ‘maker of water.’.
Hydrogen - Element information, properties and uses | Periodic …
WebElement Hydrogen (H), Group 1, Atomic Number 1, s-block, Mass 1.008. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Hydrogen explained - U.S. Energy Information Administration (EIA)
WebHydrogen occurs naturally on earth in compound form with other elements in liquids, gases, or solids. Hydrogen combined with oxygen is water (H 2 O). Hydrogen combined with carbon forms different compounds—or hydrocarbons—that …
Hydrogen - Wikiwand
WebHydrogen 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 H2, sometimes called dihydrogen, but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen.
Hydrogen Facts - H or Atomic Number 1 - ThoughtCo
WebSep 19, 2018 · Atomic Number: 1. Group: Group 1. Classification: Nonmetal. Block: s-block. Electron Configuration: 1s1. Phase at STP: Gas. Melting Point: 13.99 K (−259.16 °C, −434.49 °F) Boiling Point: 20.271 K (−252.879 °C, −423.182 °F) Density at STP: 0.08988 g/L. Oxidation States: -1, +1. Electronegativity (Pauling Scale): 2.20.
hydrogen summary | Britannica
Webhydrogen, Lightest chemical element, chemical symbol H, atomic number 1. A colourless, odourless, tasteless, flammable gas, it occurs as the diatomic molecule H 2. Its atom consists of one proton (the nucleus) and one electron; the isotope s deuterium and tritium have an additional one and two nuclear neutrons, respectively.
Hydrogen atom - Wikipedia
WebA hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe. [1]
Hydrogen - Fuel, Energy, Uses | Britannica
WebHydrogen has been used as a primary rocket fuel for combustion with oxygen or fluorine and is favoured as a propellant for nuclear-powered rockets and space vehicles. Another increasing use of hydrogen is in the direct reduction of iron ores to metallic iron and in the reduction of the oxides of tungsten and molybdenum to the metals.
Hydrogen - Simple English Wikipedia, the free encyclopedia
WebHydrogen is a chemical element at the start of the periodic table. It has the symbol H and atomic number 1. It also has a standard atomic weight of 1.008, which makes it the lightest element in the periodic table. Hydrogen is the most common chemical element in the Universe, making up 75% of all normal ( baryonic) matter (by mass ).
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