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  2. Hydron (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Hydron_(chemistry)

    In chemistry, the hydron, informally called proton, [2] is the cationic form of atomic hydrogen, represented with the symbol H +The general term "hydron", endorsed by IUPAC, encompasses cations of hydrogen regardless of isotope: thus it refers collectively to protons (1 H +) for the protium isotope, deuterons (2 H + or D +) for the deuterium isotope, and tritons (3 H + or T +) for the tritium ...

  3. List of chemical databases - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_databases

    Royal Society of Chemistry: from 275 data sources "ChemSpider". 88,000,000 ChemIndex: chemical database substances CAS Search; suppliers "Chemindex". Clival Database Clinical Trail Database Clinical Trail Data Solutions 50,000 molecules clinical trail data Phase 0 to IV indications "clival". CMNPD Comprehensive Marine Natural Products Database

  4. Protonation - Wikipedia

    en.wikipedia.org/wiki/Protonation

    In chemistry, protonation (or hydronation) is the adding of a proton (or hydron, or hydrogen cation), usually denoted by H +, to an atom, molecule, or ion, forming a conjugate acid. [1] (The complementary process, when a proton is removed from a Brønsted–Lowry acid, is deprotonation.) Some examples include The protonation of water by ...

  5. Chemical database - Wikipedia

    en.wikipedia.org/wiki/Chemical_database

    Chemical structures are traditionally represented using lines indicating chemical bonds between atoms and drawn on paper (2D structural formulae).While these are ideal visual representations for the chemist, they are unsuitable for computational use and especially for search and storage.

  6. Hydrogen atom - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_atom

    Depiction of a hydrogen atom showing the diameter as about twice the Bohr model radius. (Image not to scale) A hydrogen atom is an atom of the chemical element hydrogen.The electrically neutral hydrogen atom contains a single positively charged proton in the nucleus, and a single negatively charged electron bound to the nucleus by the Coulomb force.

  7. Hydrogen ion - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_ion

    By definition, an acid is an ion or molecule that can donate a proton, and when introduced to a solution it will react with water molecules (H 2 O) to form a hydronium ion (H 3 O +), a conjugate acid of water. [4] For simplistic reasoning, the hydrogen ion (H +) is often used to abbreviate the hydronium ion.

  8. Data set - Wikipedia

    en.wikipedia.org/wiki/Data_set

    The data set lists values for each of the variables, such as for example height and weight of an object, for each member of the data set. Data sets can also consist of a collection of documents or files. [2] In the open data discipline, data set is the unit to measure the information released in a public open data repository. The European data ...

  9. Hydrogen - Wikipedia

    en.wikipedia.org/wiki/Hydrogen

    Anaerobic oxidation of iron by the protons of water at high temperature can be schematically represented by the set of following reactions: 1) Fe + H 2 O → FeO + H 2 2) Fe + 3 H 2 O → Fe 2 O 3 + 3 H 2 3) Fe + 4 H 2 O → Fe 3 O 4 + 4 H 2. Many metals react similarly with water leading to the production of hydrogen. [68]