A freshly prepared sample of isotope X shows an activity of
CHEMISTRY · Multi-part · US High School · Chemistry · Atomic Structure & Nuclear · Atomic Structure & Nuclear
Problem
A freshly prepared sample of isotope X shows an activity of 8000Bq. After 2.5h its activity is found to be 500Bq.
(a) Determine the decay constant of isotope X in h−1.
(b) Calculate its half-life in minutes.
(c) Compute its mean life in seconds.
(d) From the instant of preparation, how much total time must pass before the activity falls to 100Bq?