Answer:
It forms ions or becomes charged.
Explanation:
Charged atoms or ions form when an atom loses or gains an electron/s.This can be caused by certain factors like bonding with other elements or when exposed to EM radiation.EM radiation sometimes have a sufficient energy to overcome ionization energy and therefore free an electron.This phenomena is called photoelectric effect.Positively charged ions are called cations while negatively charged ions are called anions.
