enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Polyatomic ion - Wikipedia

   en.wikipedia.org/wiki/Polyatomic_ion

   The term molecule may or may not be used to refer to a polyatomic ion, depending on the definition used. The prefix poly-carries the meaning "many" in Greek, but even ions of two atoms are commonly described as polyatomic. [2] In older literature, a polyatomic ion may instead be referred to as a radical (or less commonly, as a radical group).

3. Template:Sidebar periodic table - Wikipedia

   en.wikipedia.org/.../Template:Sidebar_periodic_table

   Download as PDF; Printable version ... sidebar for the series articles about the periodic table of elements. It includes two ... table (polyatomic).svg ...

4. Polyoxometalate - Wikipedia

   en.wikipedia.org/wiki/Polyoxometalate

   The phosphotungstate anion, an example of a polyoxometalate. In chemistry, a polyoxometalate (abbreviated POM) is a polyatomic ion, usually an anion, that consists of three or more transition metal oxyanions linked together by shared oxygen atoms to form closed 3-dimensional frameworks.

5. Lewis structure - Wikipedia

   en.wikipedia.org/wiki/Lewis_structure

   The nitrogen atom has only 6 electrons assigned to it. One of the lone pairs on an oxygen atom must form a double bond, but either atom will work equally well. Therefore, there is a resonance structure. Tie up loose ends. Two Lewis structures must be drawn: Each structure has one of the two oxygen atoms double-bonded to the nitrogen atom.

6. Ion - Wikipedia

   en.wikipedia.org/wiki/Ion

   Ions consisting of only a single atom are termed atomic or monatomic ions, while two or more atoms form molecular ions or polyatomic ions. In the case of physical ionization in a fluid (gas or liquid), "ion pairs" are created by spontaneous molecule collisions, where each generated pair consists of a free electron and a positive ion. [5]

7. Quaternary ammonium cation - Wikipedia

   en.wikipedia.org/wiki/Quaternary_ammonium_cation

   Quaternary ammonium cation. The R groups may be the same or different alkyl or aryl groups. Also, the R groups may be connected. In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure [NR 4] +, where R is an alkyl group, an aryl group [1] or organyl group.

8. Polyhalogen ions - Wikipedia

   en.wikipedia.org/wiki/Polyhalogen_ions

   Polyhalogen ions are a group of polyatomic cations and anions containing halogens only. The ions can be classified into two classes, isopolyhalogen ions which contain one type of halogen only, and heteropolyhalogen ions with more than one type of halogen.

9. Mercury polycations - Wikipedia

   en.wikipedia.org/wiki/Mercury_polycations

   The best known polycation of mercury is Hg 2+ 2, in which mercury has a formal oxidation state of +1. The Hg 2+ 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+