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.
Get information about an ion:
Find a particular property of an ion:
Compare several ions:
Find an ionic radius:
Explore classes of ions, which are determined by an ion's charge, number of atoms or position on the periodic table.