What is the significance of the half-life of a radioisotope?

A. It tells what fraction of a radioactive sample remains after a certain length of time.
B. It tells how long a radioisotope sample is considered dangerous.
C. It tells how much energy is released over the lifetime of a radioactive sample.
D. It tells what kind of radioactivity is released through radioactive decay.

Question

25-07-2024
Chemistry

Answered

What is the significance of the half-life of a radioisotope?

A. It tells what fraction of a radioactive sample remains after a certain length of time.
B. It tells how long a radioisotope sample is considered dangerous.
C. It tells how much energy is released over the lifetime of a radioactive sample.
D. It tells what kind of radioactivity is released through radioactive decay.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-25T11:58:26-04:00

Final answer:

The half-life of a radioisotope signifies the time taken for half of the radioactive atoms in a sample to decay. It represents the rate of decay and guides calculations of remaining radioactive material.

Explanation:

Half-life is the time it takes for half of the radioactive atoms in a sample to decay. It is a constant characteristic of a radioisotope and indicates the rate of decay.

One way to determine the amount of radioactive isotope remaining after a given number of half-lives is to use the formula:

(Remaining Amount) = (Initial Amount) x (1/2)^(number of half-lives passed).

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