Consider the graph of activity versus time for a naturally occurring isotope. The half-life of this isotope is between 80 and 120 hours.

Question

Consider the graph of activity versus time for a naturally occurring isotope.  The half-life of this isotope is between 80 and 120 hours.

Quizplus · Accepted Answer

Without seeing the graph, it is impossible to determine the correctness of this statement. However, even if the graph showed a clear exponential decay, the statement is still false as the half-life of an isotope cannot be both between 80 and 120 hours simultaneously. It must be a specific value within that range.

Consider the Graph of Activity Versus Time for a Naturally