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The half life of actinium (for the natural isotope 227Ac) is 21,773 years.

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Is it true that the half-life of a radioactive isotope decreases as the isotopes decay?

no, halflife is a constant for each isotope's decay process.


Is any isotope of lead is radioactive?

many. one example is lead-214 with a halflife of 26.8 minutes.


What is the time needed for half of a sample of a radioactive isotope to break down to form daughter isotopes called?

halflife


How do scientists use the halflife of radioactive isotopes to date rocks and fossils?

The basic idea is to compare the abundance of a naturally occurring radioactive isotope within a material to the abundance of its decay products; it is known how fast the radioactive isotope decays.


When an isotope is blank it is radioactive?

When an isotope is unstable, it is said to be radioactive.


All radioactive nuclides of an element have the same half life?

No, halflife is a bulk statistical property of a quantity of an isotope of an element.Individual nuclei do not have halflives, instead they have a probability of decaying at the current moment of time.


Is lithium 8 an isotope why?

Yes, but it has a halflife of only 0.86 seconds.


What is the stable isotope that is formed by the breakdown of a radioactive isotope?

The stable isotope formed by the breakdown of a radioactive isotope is called a daughter isotope. This process is known as radioactive decay, where a radioactive isotope transforms into a stable daughter isotope through the emission of particles or energy.


How is radioactive Isotope different from a stable isotope?

The radioactive isotope is disintegrated in time and emit radiations.


How is a radioactive isotope different from a stable isotope?

The radioactive isotope is disintegrated in time and emit radiations.


What is the stable isotope produced by radioactive decay is called?

The stable isotope produced by radioactive decay is called a daughter isotope.


What is half life of a isotope?

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.