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  2. Polyatomic ion - Wikipedia

    en.wikipedia.org/wiki/Polyatomic_ion

    A simple example of a polyatomic ion is the hydroxide ion, which consists of one oxygen atom and one hydrogen atom, jointly carrying a net charge of −1; its chemical formula is O H −. In contrast, an ammonium ion consists of one nitrogen atom and four hydrogen atoms, with a charge of +1; its chemical formula is N H + 4.

  3. IUPAC nomenclature of inorganic chemistry - Wikipedia

    en.wikipedia.org/wiki/IUPAC_nomenclature_of...

    The cation is always named first. Ions can be metals, non-metals or polyatomic ions. Therefore, the name of the metal or positive polyatomic ion is followed by the name of the non-metal or negative polyatomic ion. The positive ion retains its element name whereas for a single non-metal anion the ending is changed to -ide.

  4. Carbonate - Wikipedia

    en.wikipedia.org/wiki/Carbonate

    A carbonate is a salt of carbonic acid, (H 2 CO 3), [2] characterized by the presence of the carbonate ion, a polyatomic ion with the formula CO 2− 3. The word "carbonate" may also refer to a carbonate ester , an organic compound containing the carbonate group O=C(−O−) 2 .

  5. Mercury polycations - Wikipedia

    en.wikipedia.org/wiki/Mercury_polycations

    2 ion was perhaps the first metal-metal bonded species confirmed. The presence of the Hg 2+ 2 ion in solution was shown by Ogg in 1898. [7] In 1900, Baker showed the presence of HgCl dimers in the vapour phase. [8] The presence of Hg 2+ 2 units in the solid state was first determined in 1926 using X-ray diffraction. [2]

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    You've Got Mail!® Millions of people around the world use AOL Mail, and there are times you'll have questions about using it or want to learn more about its features. That's why AOL Mail Help is here with articles, FAQs, tutorials, our AOL virtual chat assistant and live agent support options to get your questions answered.

  9. List of Valve games - Wikipedia

    en.wikipedia.org/wiki/List_of_Valve_games

    The reception of their games, along with the creation of Steam, has prompted some publications to list Valve as one of the top game developers of all time and the most powerful company in PC gaming. [ 15 ] [ 16 ] [ 17 ] Newell received a BAFTA Fellowship award in 2013 for recognizing the impact Valve had left on the gaming industry in producing ...