Radioactive dating example
Cosmic radiation from the Sun and other stars is a source of background radiation on Earth.Other radioactive isotopes are produced by humans via nuclear reactions, which result in unstable combinations of neutrons and protons.Radon, generated by the radioactive decay of radium, is present in air.Organic materials typically contain small amounts of radioactive carbon and potassium.Every chemical element has one or more radioactive isotopes.For example, hydrogen, the lightest element, has three isotopes, which have mass numbers 1, 2, and 3.In nuclear medicine, tracer radioisotopes may be taken orally or be injected or inhaled into the body.
A radioactive isotope, also known as a radioisotope, radionuclide, or radioactive nuclide, is any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays.Only hydrogen-3 (tritium), however, is a radioactive isotope; the other two are stable.More than 1,800 radioactive isotopes of the various elements are known.As a member, you'll also get unlimited access to over 79,000 lessons in math, English, science, history, and more.Plus, get practice tests, quizzes, and personalized coaching to help you succeed.
Search for radioactive dating example:
Radioactive isotopes of radium, thorium, and uranium, for example, are found naturally in rocks and soil.