Monatomic ion
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Monatomic_ion".

A monatomic ion is an ion consisting of many ions of the same atoms. A type I binary ionic compound contains a metal (cation) 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

Common monatomic ions

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Common type I cations
Hydrogen H+
Lithium Li+
Sodium Na+
Potassium K+
Caesium Cs+
Beryllium Be2+
Magnesium Mg2+
Calcium Ca2+
Barium Ba2+
Aluminum Al3+
Silver Ag+
Zinc Zn2+
Common anions
hydride H−
fluoride F−
chloride Cl−
bromide Br−
iodide I−
oxide O2−
sulfide S2−
nitride N3−
phosphide P3−
Common type II cations
Systematic name Ion Alternate name
iron(III) Fe3+ ferric
iron(II) Fe2+ ferrous
copper(II) Cu2+ cupric
copper(I) Cu+ cuprous
cobalt(III) Co3+ cobaltic
cobalt(II) Co2+ cobaltous
tin(IV) Sn4+ stannic
tin(II) Sn2+ stannous
lead(IV) Pb4+ plumbic
lead(II) Pb2+ plumbous
mercury(II) Hg2+ mercuric
mercury(I) Hg22+* mercurous

*note that mercury (I) ions always occur bound together to form Hg2.

See also
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