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  2. IUPAC nomenclature of inorganic chemistry - Wikipedia

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

    The Roman numerals in fact show the oxidation number, but in simple ionic compounds (i.e., not metal complexes) this will always equal the ionic charge on the metal. For a simple overview see [1] Archived 2008-10-16 at the Wayback Machine , for more details see selected pages from IUPAC rules for naming inorganic compounds Archived 2016-03-03 ...

  3. Polyatomic ion - Wikipedia

    en.wikipedia.org/wiki/Polyatomic_ion

    Polyatomic ions often are useful in the context of acid–base chemistry and in the formation of salts. Often, a polyatomic ion can be considered as the conjugate acid or base of a neutral molecule. For example, the conjugate base of sulfuric acid (H 2 SO 4) is the polyatomic hydrogen sulfate anion (HSO − 4).

  4. Chemical nomenclature - Wikipedia

    en.wikipedia.org/wiki/Chemical_nomenclature

    For the compound, SnO 2, the tin ion is Sn 4+ (balancing out the 4− charge on the two O 2− anions), and because this is a higher oxidation state than the alternative (Sn 2+), this compound is termed stannic oxide. Some ionic compounds contain polyatomic ions, which are charged entities containing two or more covalently bonded types of atoms ...

  5. IUPAC nomenclature of inorganic chemistry 2005 - Wikipedia

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

    Polyatomic cations of the same element are named as the element name preceded by di-, tri-, etc., e.g.: Hg 2+ 2 dimercury(2+) Polyatomic cations made up of different elements are named either substitutively or additively, e.g.: PH + 4 phosphanium; SbF + 4 tetrafluorostibanium (substitutive) or tetrafluoridoantimony(1+)

  6. Salt (chemistry) - Wikipedia

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

    The circumstances under which a compound will have ionic or covalent character can typically be understood using Fajans' rules, which use only charges and the sizes of each ion. According to these rules, compounds with the most ionic character will have large positive ions with a low charge, bonded to a small negative ion with a high charge. [25]

  7. IUPAC nomenclature of chemistry - Wikipedia

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

    IUPAC nomenclature is used for the naming of chemical compounds, based on their chemical composition and their structure. [1] For example, one can deduce that 1-chloropropane has a Chlorine atom on the first carbon in the 3-carbon propane chain.

  8. Bicarbonate - Wikipedia

    en.wikipedia.org/wiki/Bicarbonate

    It is a polyatomic anion with the chemical formula H C O − 3. Bicarbonate serves a crucial biochemical role in the physiological pH buffering system. [3] The term "bicarbonate" was coined in 1814 by the English chemist William Hyde Wollaston. [4] [5] The name lives on as a trivial name.

  9. Chemical formula - Wikipedia

    en.wikipedia.org/wiki/Chemical_formula

    Each polyatomic ion in a compound is written individually in order to illustrate the separate groupings. For example, the compound dichlorine hexoxide has an empirical formula ClO 3 , and molecular formula Cl 2 O 6 , but in liquid or solid forms, this compound is more correctly shown by an ionic condensed formula [ClO 2 ] + [ClO 4 ] − , which ...