how can we use the ions and radicals
Answers
An ion is an atom or molecule that is positively or negatively charged due to the loss or gain of an electron. In order for an atom to be neutral the number of electron orbiting the nucleus must match the number of protons in the nucleus. If these don't match, then we have an ion. So anytime an atom or molecule looses or gains an electron, and the number of electrons no longer match the number of protons, then it is an ion. The result is this atom or molecule now carries a charge, whether it be positive or negative.
A radical is a molecule or atom that has at least one unpaired electron (one electron is in an orbit by itself), but this molecule or atom does not carry a charge like an ion because the number of orbiting electrons still matches the number of protons in the nucleus.; however it is very reactive.