The time it takes for the nucleus of one atom of a radioactive isotope to split in half is half life.
- The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive.
What is radioactive isotope?
- An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable.
- Radioisotopes may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment.
- These are also called radionuclide.
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