At the end of this activity, students should be able to: û describe the decay of radioactive elements. û explain the concepts of: half-life, decay constant, mean lifetime; and describe the relationship between them. û state the formula for exponential law of decay. û explain the concept of the activity, name its units, and state on what its magnitude depends. û understand the radiocarbon method and scintigraphic examination.

Originally released by Learnetic, 2016.