The half-life of a radioactive isotope is

A) half the time that it takes for a radioactive isotope to eat a large pizza.
B) half the time required for the decay of a large sample of nuclei of that isotope.
C) half the time required for a nucleus of that isotope to decay.
D) the time required for the decay of half of a large sample of nuclei of that isotope.
E) the time required for a nucleus of that isotope to partially decay.


D

Physics & Space Science

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