Chemical Ions

Ions are charged chemical species, which can be either a single atom, called monatomic ions, or many atoms held together by covalent bonds, called polyatomic ions. Use Wolfram|Alpha to find information on ions and classes of ions.


Learn about positively and negatively charged ions and their properties.

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Classes of Ions

Explore classes of ions, which are determined by an ion's charge, number of atoms or position on the periodic table.

Compare ions of a given element:

Get information about a class of ions:

Find a particular property value for a class of ions: