When an isotope is unstable, it is said to be radioactive.
False. When an unstable isotope decays, the resulting daughter isotope may or may not be stable. Some daughter isotopes are stable, while others may still be radioactive and undergo further decay.
Not all isotopes are unstable. But now more than 3 000 unstable isotopes are known, artificial or natural.
It isn't really an ELEMENT that is unstable, but an ISOTOPE. That means that in general, for the same element, some atoms will decay, and some will not - the difference being the number of neutrons in the nucleus.
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When an isotope is unstable, it is said to be radioactive.
isotope
Each (unstable) isotope has a distinctive half-life.
Hydrogen has 1 unstable isotope, and 2 stable isotopes.
False. When an unstable isotope decays, the resulting daughter isotope may or may not be stable. Some daughter isotopes are stable, while others may still be radioactive and undergo further decay.
its nucleus is unstable
Not all isotopes are unstable. But now more than 3 000 unstable isotopes are known, artificial or natural.
It isn't really an ELEMENT that is unstable, but an ISOTOPE. That means that in general, for the same element, some atoms will decay, and some will not - the difference being the number of neutrons in the nucleus.
Radioactive isotope, or radioisotope.
This is a radioactive isotope.
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Each isotope, stable or unstable, has a specific symbol; for example K-40 for potassium 40.