What are radioisotopes?
Radioisotopes are widely used in medicine, industry, and scientific research.
It is radioactive isotopes of an element. Itcan also be defined as atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.

How are radioisotopes used?
Some radioisotopes used in nuclear medicine have short half-lives, which means they decay quickly and are suitable for diagnostic purposes; others with longer half-lives take more time to decay, which makes them suitable for therapeutic purposes.

Radioisotopes are commonly used in industrial radiography, which uses a gamma source to conduct stress testing or check the integrity of welds. A common example is to test aeroplane jet engine turbines for structural integrity.