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  1. sciencenotes.org › list-elements-atomic-numberElement List – Element Names, Symbols, and Atomic Numbers

    May 17, 2014 · Here is a list of elements of the periodic table, their atomic numbers, and element symbols. The list is ordered by increasing atomic number, which is the number of protons in an atom of that element. Each element has a symbol, which is a one- or two-letter abbreviation of its name.

    • Manganese

      Manganese is a metal that is atomic number 25 on the...

  2. periodictable.chemicalaid.com › element › OOxygen (O) - Periodic Table

    Oxygen is the 8th element in the periodic table and has a symbol of O and atomic number of 8. It has an atomic weight of 15.999 and a mass number of 16. Oxygen has eight protons and eight neutrons in its nucleus, and eight electrons in two shells.

    • 15.999
    • 16
    • 16
    • Gas

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  4. www.omnicalculator.com › chemistry › atomAtom Calculator

    The atom calculator is a tool for calculating the atomic number and the mass number based on the number of atom components - protons, neutrons, and electrons (or vice versa). In addition, you can define the charge of ions with known numbers of protons and electrons.

  5. quizlet.com › 121362203BIO CH 2 part 1 Atoms and Bonds Flashcards - Quizlet

    an equal number of protons and electrons Oxygen, with an atomic number of 8, is a neutral atom and has ________ electrons in the first electron shell and ________ electrons in the second electron shell.

  6. en.wikipedia.org › wiki › OxygenOxygen - Wikipedia

    Oxygen is a chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds.

  7. www.periodictable.one › element › 8Oxygen (O) - Periodic Table

    Oxygen is a chemical element of the periodic table with chemical symbol O and atomic number 8 with an atomic weight of 15.999 u and is classed as nonmetal and is part of group 16 (oxygen group). Oxygen is gas at room temperature.

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  9. www.aqua-calc.com › element › oxygenOxygen is the 8th element of the periodic table of elements

    [ ] indicates the atomic weight of the longest-lived isotope. * indicates the IUPAC conventional atomic weights; standard atomic weights for these elements are expressed in intervals; see iupac.org for an explanation and values.