Hede.io Entry: Ion
In chemistry
an ion is an atom
or molecule
that has a positive or negative net electric charge
. This means that the total number of electrons
in an atom or molecule is not equal to its total number of protons
. Negative and positive ions readily form ionic compounds
due to their opposite electrical charges.
A cation
is a positive ion and an anion
is negative ion. Both terms were first used by British scientist
Michael Faraday
to help describe what he observed while experimenting with galvanic cells
. Cations got their name because the positive ions were attracted to the cathode
electrode
and the negative charged ion anion was named so due to their attraction to the anode
electrode.
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