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  1. Hydrogen
    HydrogenChemical element with symbol H
    FactsPropertiesUsesSolubilityNatural occurrenceSmell
     
  2. Wikipedia
    https://en.wikipedia.org/wiki/Hydrogen

    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 H2, sometimes called dihydrogen, but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen. It is colorless, odorless, non-toxic, and highly combustible. Constituting a… See more

    Properties

    Hydrogen gas is highly flammable:
    2 H2(g) + O2(g) → 2 H2O(l) (572 kJ/2 mol = 286 kJ/mol = 141.865 MJ/kg)
    Enthalpy of combustion: −286 kJ/mol.
    Hydrogen gas forms explosive mixtures with air in c… See more

    History

    In 1671, Irish scientist Robert Boyle discovered and described the reaction between iron filings and dilute acids, which results in the production of hydrogen gas.
    Having provided a saline spirit [hydrochloric acid], whic… See more

    What does hydrogen stand for?
    For other uses, see Hydrogen (disambiguation). 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 H2, sometimes called dihydrogen, but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen.
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  2. Constituting about 75% of all normal matter, hydrogen is the most abundant chemical element in the universe. [note 1] Stars, including the Sun, mainly consist of hydrogen in a plasma state, while on Earth, hydrogen is found in water, organic compounds, as dihydrogen, and in other molecular forms.

    Hydrogen - Wikiwand

    www.wikiwand.com/en/articles/Hydrogen
    Hydrogen is the most abundant element in our universe, making up about 75% of its total mass. On Earth, naturally occurring hydrogen gas is found in very small quantities. Instead, most hydrogen atoms are bound to other atoms – for example, water is a molecule containing hydrogen and oxygen atoms.

    Introduction to hydrogen - European Hy…

    observatory.clean-hydrogen.europa.eu/learn-abou…
     
  3. Wikipedia
    https://simple.wikipedia.org/wiki/Hydrogen

    Hydrogen - Simple English Wikipedia, the free encyclopedia

     
  4. Wikipedia
    https://en.wikipedia.org/wiki/Hydrogen_atom

    Hydrogen atom - Wikipedia

  5. Wikipedia
    https://en.wikipedia.org/wiki/Natural_hydrogen

    Natural hydrogen - Wikipedia

  6. Wikipedia
    https://en.wikipedia.org/wiki/Hydrogen_…

    Hydrogen economy - Wikipedia

    A hydrogen economy was proposed by the University of Michigan to solve some of the negative effects of using hydrocarbon fuels where the carbon is …

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    • Wikipedia
      https://en.wikipedia.org/wiki/Isotopes_o…

      Isotopes of hydrogen - Wikipedia

      The three most stable isotopes of hydrogen: protium (A = 1), deuterium (A = 2), and tritium (A = 3).

    • Britannica
      https://www.britannica.com/science/hy…

      Hydrogen | Properties, Uses, & Facts | Britannica

      Oct 30, 2024 · hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The hydrogen atom has a nucleus consisting of a proton bearing …

    • Wikipedia
      https://en.wikipedia.org/wiki/Liquid_hyd…

      Liquid hydrogen - Wikipedia

      Liquid hydrogen is a common liquid rocket fuel for rocketry application and is used by NASA and the U.S. Air Force, which operate a large number of liquid hydrogen tanks with an individual capacity up to 3.8 million liters (1 million U.S. gallons).

    • Wikipedia
      https://en.wikipedia.org/wiki/Hydrogen_…

      Hydrogen production - Wikipedia

      In this process, hydrogen is produced from a chemical reaction between steam and methane, the main component of natural gas. Producing one tonne of hydrogen through this process emits 6.6–9.3 tonnes of carbon dioxide. [4] …

    • WebMD
      https://www.webmd.com/diet/hydrogen-water-health-benefits

      Hydrogen Water: Health Benefits and Side Effects - WebMD

    • ThoughtCo
      https://www.thoughtco.com/hydrogen-f…

      Hydrogen Facts - Element 1 or H - ThoughtCo

      Jan 29, 2020 · Learn about the properties, sources, uses, and isotopes of hydrogen, the first and most abundant element in the universe. This web page is not a Wikipedia article, but a fact sheet by a science writer and educator.

    • ThoughtCo
      https://www.thoughtco.com/hydrogen-element-facts-606474

      Hydrogen Facts - H or Atomic Number 1 - ThoughtCo

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      Väte – Wikipedia

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      Hidrogén – Wikipédia

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      https://pt.wikipedia.org/wiki/Hidrogénio

      Hidrogénio – Wikipédia, a enciclopédia livre

    • Britannica
      https://www.britannica.com/summary/hydrogen

      hydrogen summary | Britannica

    • The Conversation
      https://theconversation.com/blue-hydrogen-what-is...

      Blue hydrogen – what is it, and should it replace natural gas?

    • Wikiwand
      https://www.wikiwand.com/en/articles/Hydrogen

      Hydrogen - Wikiwand

    • The World Economic Forum
      https://www.weforum.org/stories/2021/07/clean...

      Grey, blue, green – why are there so many colours of hydrogen?

    • Difference Wiki
      https://www.difference.wiki/sodium-hypochlorite-vs...

      Sodium Hypochlorite vs. Hydrogen Peroxide: What’s the Difference?

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