A half-life is the time taken for the radioactivity of a material to fall to half its original value. A material can undergo infinite half-lives because each time it falls to half the next half-life falls to half of that half:
No half-lives have elapsed when radioactivity is at the original amount; 1/1.
1 half-life is when radioactivity is at 1/2
2 half-lives is when radioactivity is at 1/4.
3 half-lives is when radioactivity is at 1/8.
4 half-lives is when radioactivity is at 1/16.
And so on.
The half life of an isotope is defined by the amount of time it takes for half of the parent isotope to decay into its daughter isotope.
half-life is a measure of the rate of decay.
No, the half-life of a radioactive isotope does not decrease as the isotope decays. That half-life remains constant. It's the amount of the substance that decreases as the isotope decays.
c.half-life
It's called "half life".
Its stability. The longer the half-life, the more stable is the isotope.
Answer : When the isotopes decay, scientists can find out how old the rock is depending on the radioactive isotope's half-life. Explanation: Radioactive isotopes are unstable and will decay. For example, when humans die carbon-14 decays. The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope. At the next half-life there will be 25% of the radioactive isotope and 75% of the stable isotope. At the next half life there will be 12.5% radioactive and 87.5% stable. Example: Carbon-14 is a radioactive isotope with a half life of 5,730 years. How old would carbon-14 be when there is 75% carbon-14 in the rock? 75% is half of the time before the half-life, so it would be 2,365 years. Hope this helps. Half life helps scientists find how much the isotope has decayed and the age of the rock.
Isotope A
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.
Each (unstable) isotope has a distinctive half-life.
No, the half-life of a radioactive isotope does not decrease as the isotope decays. That half-life remains constant. It's the amount of the substance that decreases as the isotope decays.
The half-life of a radioactive isotope is defined as the time taken for the isotope to decay to half of its initial mass. So to decay to 50 percent of its initial mass will take one half-life of the isotope. One half-life of the isotope is 10 hours so the time taken to decay is also 10 hours.
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.
It tells how long it takes for a radioactive isotope to become a daughter element.
This is called the "half-life" of the isotope.
The type of isotope
It depends if it is an isotope or not
The half-life of the isotope is 12.3.
The length of time depends on the element and isotope, but the point at which half of the sample has decayed is known as the half-life.