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  2. Sulfur trioxide - Wikipedia

    en.wikipedia.org/wiki/Sulfur_trioxide

    The molecule SO 3 is trigonal planar.As predicted by VSEPR theory, its structure belongs to the D 3h point group.The sulfur atom has an oxidation state of +6 and may be assigned a formal charge value as low as 0 (if all three sulfur-oxygen bonds are assumed to be double bonds) or as high as +2 (if the Octet Rule is assumed). [7]

  3. Charge number - Wikipedia

    en.wikipedia.org/wiki/Charge_number

    Atomic numbers (Z) are a special case of charge numbers, referring to the charge number of an atomic nucleus, as opposed to the net charge of an atom or ion. The charge numbers for ions (and also subatomic particles ) are written in superscript, e.g., Na + is a sodium ion with charge number positive one (an electric charge of one elementary ...

  4. Sulfite - Wikipedia

    en.wikipedia.org/wiki/Sulfite

    Sulfites or sulphites are compounds that contain the sulfite ion (systematic name: sulfate(IV) ion), SO 2− 3. The sulfite ion is the conjugate base of bisulfite. Although its acid (sulfurous acid) is elusive, [1] its salts are widely used. Sulfites are substances that naturally occur in some foods and the human body.

  5. SO3 - Wikipedia

    en.wikipedia.org/wiki/SO3

    SO3 may refer to Sulfur trioxide , SO 3 , a chemical compound of sulfur and the anhydride of sulfuric acid Sulfite , SO 2− 3 , a chemical ion composed of sulfur and oxygen with a 2− charge

  6. Oxidation state - Wikipedia

    en.wikipedia.org/wiki/Oxidation_state

    Oxidation numbers are assigned to elements in a molecule such that the overall sum is zero in a neutral molecule. The number indicates the degree of oxidation of each element caused by molecular bonding. In ionic compounds, the oxidation numbers are the same as the element's ionic charge.

  7. Sulfur oxide - Wikipedia

    en.wikipedia.org/wiki/Sulfur_oxide

    Sulfur oxide refers to many types of sulfur and oxygen containing compounds such as SO, SO 2, SO 3, S 7 O 2, S 6 O 2, S 2 O 2, etc. . Sulfur oxide (SO x) refers to one or more of the following:

  8. Sulfite sulfate - Wikipedia

    en.wikipedia.org/wiki/Sulfite_sulfate

    A sulfite sulfate is a chemical compound that contains both sulfite and sulfate anions [SO 3] 2− [SO 4] 2−.These compounds were discovered in the 1980s as calcium and rare earth element salts.

  9. 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.