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Half-life is described in time units.
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Why are radioactive isotopes and half life important to science?
half life tell time
What is the half-life of every radioactive element?
The same element can have different half-lives, for different isotopes. You can find a list at the Wikipedia article "List of radioactive isotopes by half-life". This list is NOT complete; a complete list would have about 3000 nuclides (that is, isotopes).
Do isotopes determine the size or age of a rock?
age... parent and daughter isotopes in relation to half life
Why is it necessary for a half- life to be long?
It is not necessary for a half life to be long. Some isotopes have half lives of just a few seconds, or even less.
Why stable isotopes dont have half life long?
A stable isotope does not have a half-life because of the definition of stable versus radioactive. It is stable, and does not decay; thus, it has no half-life. Only unstable, i.e. radioactive isotopes have half-lives. There are some isotopes that are thought to be unstable, but for which we have been unable to measure the half-life because it is so long. These are examples of some of the primordial nuclides, such as Ta-180m, estimated to have a half-life in excess of 1015 years, far longer than the known age of the universe.
Why are radioactive isotopes and half life important to science?
half life tell time
What is the half life of arsenic?
Arsenic (in the form of arsenic-75) is a stable element. Only its isotopes have a half-life. As there are many isotopes of every element, and each has a different half life, it is difficult to specify a precise answer. The related link below contains a list of known isotopes and their half lives.
What is the half-life of plutonium-239?
Plutonium has 20 isotopes; each isotope has another half-life. Please read: http://en.wikipedia.org/wiki/Isotopes_of_plutonium.
What is meant by half life of radioactive isotopes?
This is the time in which half the the atoms was disintegrated.
What is the half-life of every radioactive element?
The same element can have different half-lives, for different isotopes. You can find a list at the Wikipedia article "List of radioactive isotopes by half-life". This list is NOT complete; a complete list would have about 3000 nuclides (that is, isotopes).
How is rubidum 87 used if its half-life is older than the earth?
The term half life describes the time taken for half of a total amount of radioactive isotopes to decay. However that doesn't mean that they all take exactly that length of time. Some will decay much more quickly than that and some more slowly. As such even though the half life is longer than the age of the earth, some of the Rubidum 87 isotopes will have decayed. Based on the proportion of rubidum 87 to the daughter isotopes you can still use this for dating materials younger than the half life of rubidum 87.
Do isotopes determine the size or age of a rock?
age... parent and daughter isotopes in relation to half life
State what is meant by half life of radioactive isotopes?
This is the time in which half the the atoms was disintegrated.
How many half-lives would be necessary for a sample of parent isotopes to decay to the point that only one-half of the sample is composed of parent isotopes?
One half life.
Uses of isotopes applying with half life?
nothing chemistry is stupid
Why is it necessary for a half- life to be long?
It is not necessary for a half life to be long. Some isotopes have half lives of just a few seconds, or even less.
What is half life of nitrogen?
The natural isotopes of nitrogen are stable; for the synthetic radioactive isotopes of nirogen see the link below.
