Ionic bond, also known as electrovalent bond is a type of bond formed from the electrostatic attraction between oppositely charged ions in a chemical compound. These kinds of bonds occur mainly between a metallic and a non metallic atom.
What is food irradiation? Food irradiation is a processing technique that exposes food to electron beams, X-rays or gamma rays. The process produces a similar effect to pasteurisation, cooking or other forms of heat treatment, but with less effect on look and texture. Irradiated food has been exposed to radioactivity but does not become radioactive itself.
In industry, radioactive tracer substances can be put into pipes and machinery, then we can detect where the substances go. This is basically the same use as in medicine. Gamma rays kill microbes, and are used to sterilise food so that it will keep fresh for longer. This is known as irradiated food.