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  2. Chemical formula - Wikipedia

    en.wikipedia.org/wiki/Chemical_formula

    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 illustrates that this compound consists of [ClO 2] + ions and [ClO 4] − ions. In such cases, the condensed ...

  3. Structural formula - Wikipedia

    en.wikipedia.org/wiki/Structural_formula

    Unlike other chemical formula types, [a] which have a limited number of symbols and are capable of only limited descriptive power, structural formulas provide a more complete geometric representation of the molecular structure. For example, many chemical compounds exist in different isomeric forms, which have different enantiomeric structures ...

  4. Glossary of chemical formulae - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemical_formulae

    This is a list of common chemical compounds with chemical formulae and CAS numbers, indexed by formula. This complements alternative listing at list of inorganic compounds . There is no complete list of chemical compounds since by nature the list would be infinite.

  5. Category:Molecular formulas - Wikipedia

    en.wikipedia.org/wiki/Category:Molecular_formulas

    Set index articles on molecular formulas (2,420 P) Pages in category "Molecular formulas" The following 200 pages are in this category, out of approximately 1,196 total.

  6. Formula - Wikipedia

    en.wikipedia.org/wiki/Formula

    For example, H 2 O is the chemical formula for water, specifying that each molecule consists of two hydrogen (H) atoms and one oxygen (O) atom. Similarly, O − 3 denotes an ozone molecule consisting of three oxygen atoms [ 10 ] and a net negative charge .

  7. Lists of molecules - Wikipedia

    en.wikipedia.org/wiki/Lists_of_molecules

    This is an index of lists of molecules (i.e. by year, number of atoms, etc.). Millions of molecules have existed in the universe since before the formation of Earth. Three of them, carbon dioxide, water and oxygen were necessary for the growth of life.

  8. List of inorganic compounds - Wikipedia

    en.wikipedia.org/wiki/List_of_inorganic_compounds

    Protonated molecular hydrogen – H + 3; Trioxidane – H 2 O 3; Water - H 2 O [204] He. Sodium helide – Na 2 He; I. In. Indium(I) bromide – InBr;

  9. Molecule - Wikipedia

    en.wikipedia.org/wiki/Molecule

    The empirical formula is often the same as the molecular formula but not always. For example, the molecule acetylene has molecular formula C 2 H 2 , but the simplest integer ratio of elements is CH. The molecular mass can be calculated from the chemical formula and is expressed in conventional atomic mass units equal to 1/12 of the mass of a ...