Understand and explain the random nature of radioactive decay.
Define the half-life of a radioactive isotope as the time required for the number of nuclei in a sample to halve, or for the count rate (activity) to decrease to half its initial level.
Relate the concept of half-life to the inherent randomness of the radioactive decay process.
Determine the half-life of a radioactive isotope using provided graphical or numerical data.
(HT only) Calculate the net decline of radioactive emission, expressing it as a ratio, after a specified number of half-lives have elapsed.
