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  2. Proton - Wikipedia

    en.wikipedia.org/wiki/Proton

    Protons and neutrons are both nucleons, which may be bound together by the nuclear force to form atomic nuclei. The nucleus of the most common isotope of the hydrogen atom (with the chemical symbol "H") is a lone proton.

  3. 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 ...

  4. Atomic number - Wikipedia

    en.wikipedia.org/wiki/Atomic_number

    The atomic number or nuclear charge number (symbol Z) of a chemical element is the charge number of its atomic nucleus. For ordinary nuclei composed of protons and neutrons, this is equal to the proton number (n p) or the number of protons found in the nucleus of every atom of that element.

  5. Chemical symbol - Wikipedia

    en.wikipedia.org/wiki/Chemical_symbol

    Chemical symbols are the abbreviations used in chemistry, ... The proton number (atomic number) may be indicated in the left subscript position (e.g., 64 Gd). The ...

  6. Mass number - Wikipedia

    en.wikipedia.org/wiki/Mass_number

    The mass number (symbol A, from the German word: Atomgewicht, "atomic weight"), [1] also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It is approximately equal to the atomic (also known as isotopic) mass of the atom expressed in atomic mass units.

  7. Hydrogen ion - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_ion

    A hydrogen ion is created when a hydrogen atom loses an electron.A positively charged hydrogen ion (or proton) can readily combine with other particles and therefore is only seen isolated when it is in a gaseous state or a nearly particle-free space. [1]

  8. Nucleon - Wikipedia

    en.wikipedia.org/wiki/Nucleon

    The proton's magnetic moment, symbol μ p, is 2.79 μ N, whereas, if the proton were an elementary Dirac particle, it should have a magnetic moment of 1.0 μ N. Here the unit for the magnetic moments is the nuclear magneton, symbol μ N, an atomic-scale unit of measure.

  9. Chemical element - Wikipedia

    en.wikipedia.org/wiki/Chemical_element

    A chemical element is a chemical substance whose atoms all have the same number of protons. The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8, meaning each oxygen atom has 8 protons in its nucleus.