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When an isotope is unstable, it is said to be radioactive.
In radiometric dating, the amount of a certain radioactive isotope in an object is compared with a reference amount. This ratio can then be used to calculate how long this isotope has been decaying in the object since its formation. For example, if you find that the amount of radioactive isotope left is one half of the reference amount, then the amount of time since the formation of the object would be equal to that radioactive isotope's half-life.
The radioactive isotope is disintegrated in time and emit radiations.
The radioactive isotope is disintegrated in time and emit radiations.
when an isotope is it does not undergo radioactive decay
The half life of an isotope refers to the rate at which a radioactive isotope undergoes radioactive decay. Specifically, it is the amount of time it takes for half of a given sample of a radioactive isotope to decay.
That's called a daughter isotope, or a daughter product. (The original isotope that decayed is the parent isotope.)
The half-life of a radioactive isotope is the amount of time it takes for one-half of the radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope.
Radioactive isotopes.
its nucleus is unstable
Radioactive minerals are unstable and emit radiation at a constant rate. They also have half lives and lose energy overtime. Nonradioactive minerals are stable, and by there own are incapable of emitting energy.
The rate of decay (activity) of a radioactive isotope is proportional to the number of atoms of the isotope present.