3 years ago

There are two different isotopes; X and Y, both contain the same number of radioactive substances. If sample X

Physics

1 answer:

antiseptic1488 [7]3 years ago

6 0

Answer:

Half life refers to the time for 1/2 of the radioactive atoms to decay.

Suppose that X has a half life of 10 days and Y has a half life of 20 days

If both start out with 1000 radioactive atoms then after 20 days

X would have 250 radioactive atoms and Y would have 500 atoms

The rate of decay is greater for the shorter half life:

In the example given X must have the smaller rate of decay because it has a longer half life.

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