For a given number of atoms, isotopes with longer half-lives decay more rapidly.

Name: For a given number of atoms, isotopes with longer half-lives decay more rapidly.
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Quizplus · Accepted Answer

Isotopes with longer half-lives decay more slowly, not more rapidly. This is because the half-life is the amount of time it takes for half of the atoms in a sample to decay, so a longer half-life means a slower rate of decay.

For a Given Number of Atoms, Isotopes with Longer Half-Lives