This means that if you have a sample of carbon-14 with 1,000 atoms, 500 of these atoms are expected to decay over the course of 5730 years.
Radioactive Decay to other Elements When isotopes decay they can lose some of their atomic particles (i.e.
electrons and protons) and turn from one element into another.
In such procedures, doctors administer slightly radioactive substances to patients, which are attracted to certain internal organs such as the pancreas, kidney, thyroid, liver, or brain, to diagnose clinical conditions.
Universities, colleges, high schools, and other academic and scientific institutions use nuclear materials in course work, laboratory demonstrations, experimental research, and a variety of health physics applications.
Sometimes isotopes decay from one unstable isotope into another unstable isotope.