Monatomic ion
Appearance
A monatomic ion (also called simple ion[1][2]) is an ion consisting of exactly one atom. If, instead of being monatomic, an ion contains more than one atom, even if these are of the same element, it is called a polyatomic ion.[3] For example, calcium carbonate consists of the monatomic cation Ca2+ and the polyatomic anion CO2−
3; both pentazenium (N+5) and azide (N−3) are polyatomic as well.
A type I binary ionic compound contains a metal that forms only one type of ion.[citation needed] A type II ionic compound contains a metal that forms more than one type of ion, i.e., the same element in different oxidation states.
Common type I monatomic cations Hydrogen H+ Lithium Li+ Sodium Na+ Potassium K+ Rubidium Rb+ Caesium Cs+ Magnesium Mg2+ Calcium Ca2+ Strontium Sr2+ Barium Ba2+ Aluminium Al3+ Silver Ag+ Zinc Zn2+
Common type II monatomic cations iron(II) Fe2+ ferrous iron(III) Fe3+ ferric copper(I) Cu+ cuprous copper(II) Cu2+ cupric cobalt(II) Co+2 cobaltous cobalt(III) Co3+ cobaltic tin(II) Sn2+ stannous tin(IV) Sn4+ stannic
Common monatomic anions hydride H− fluoride F− chloride Cl− bromide Br− iodide I− oxide O2− sulfide S2− nitride N3− phosphide P3−
References
- ^ admin (2018-01-10). "List of Polyatomic Ions and Charges - Freakgenie". Retrieved 2022-04-13.
- ^ Chapter 3: !Ions, Compounds, and Nomenclature
- ^ William Masterton; Cecile Hurley (24 January 2008). Chemistry: Principles and Reactions. Cengage Learning. p. 176. ISBN 978-0-495-12671-3.