The thomson allows for negative values for negatively charged ions.

The second coordination sphere is not a well defined entity for ions with charge 1 or 2.

So size of the pore isn't the only important factor for ions, charge matters too.

A detection system for single ions for field evaporation.

They cover all of the available bone surface and function as a barrier for certain ions.

Lewis structures for polyatomic ions may be drawn by the same method.

For some molecules and ions, it is difficult to determine which lone pairs should be moved to form double or triple bonds.

Ion traps have been used for numerous ions, where mercury Hg was an early candidate.

The formation of the red-brown complex has long been used as a test for ferric ions.

The LHC operating time for ions is limited to about one month per year.