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  1. Hydrogen - Wikipedia

    Under standard conditions, hydrogen is a gas of diatomic molecules with the formula H2, called dihydrogen, or sometimes hydrogen gas, molecular hydrogen, or simply hydrogen. Dihydrogen is …

  2. H2 Health

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  3. Hydrogen - Formula, Properties, Uses, Facts - Study Chemistry

    Hydrogen, symbol H, molecular formula H2 is a colourless, odourless, tasteless, flammable gaseous chemical substances among the periodic table family

  4. What is h2 in chemistry? - California Learning Resource Network

    Apr 18, 2025 · Hydrogen (H 2), a diatomic molecule consisting of two hydrogen atoms covalently bonded, holds a position of paramount importance in chemistry, physics, and increasingly, in …

  5. Hydrogen - Reactivity, Uses, Properties | Britannica

    5 days ago · One molecule of hydrogen dissociates into two atoms (H 2 → 2H) when an energy equal to or greater than the dissociation energy (i.e., the amount of energy required to break the bond that …

  6. Hydrogen (H) - Definition, Preparation, Properties, Uses, Compounds ...

    Jan 21, 2025 · We write H2 instead of H because hydrogen naturally exists as a diatomic molecule, meaning two hydrogen atoms bond together to form H2, the most stable form of hydrogen gas.

  7. 3.2: Hydrogen - The Simplest Atom - Chemistry LibreTexts

    This page discusses hydrogen (H), the first element, primarily as the diatomic molecule (H2), a colorless, odorless gas used in industries like ammonia and methanol production.

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  9. H2 - (Intro to Chemistry) - Vocab, Definition, Explanations | Fiveable

    H2 is the chemical formula for the diatomic molecule of hydrogen, which is the simplest and most abundant element in the universe. This term is crucial in understanding the phases and classification …

  10. Hydrogen - Simple English Wikipedia, the free encyclopedia

    Hydrogen is the lightest and most abundant element in the universe. It is the simplest element and the first in the periodic table. It has the chemical symbol H and atomic number 1, which means it has just …