A monatomic ion (also called simple ionChapter 3: !Ions, Compounds, and Nomenclature
/ref>) is an ion consisting of exactly one atom. If an ion contains more than one atom, even if these are of the same element, it is called a

polyatomic ion A polyatomic ion, also known as a molecular ion, is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zero. The term molecule may or may no ...

. For example, calcium carbonate consists of the monatomic ion Ca²⁺ and the polyatomic ion . A type I binary ionic compound contains a

metal A metal (from ancient Greek, Greek μέταλλον ''métallon'', "mine, quarry, metal") is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, e ...

(

cation An ion () is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by conven ...

) that forms only one type of ion. A type II ionic compound contains a metal that forms more than one type of ion, i.e., ions with different

charges Charge or charged may refer to: Arts, entertainment, and media Films * ''Charge, Zero Emissions/Maximum Speed'', a 2011 documentary Music * ''Charge'' (David Ford album) * ''Charge'' (Machel Montano album) * '' Charge!!'', an album by The Aqu ...

. : : :

References

{{DEFAULTSORT:Monatomic Ion Ions

See also

References