Final answer:
A radioisotope is a substance that emits high-energy particles or rays through radioactive decay.
Explanation:
Radioisotope is a substance that gives off high-energy particles or rays. Radioisotopes are unstable atoms that emit ionizing radiation as they undergo radioactive decay. An example of a radioisotope is carbon-14 used in carbon dating.
Learn more about Radioactivity here:
https://brainly.com/question/43999294
