Initially there are 6000 nuclei of an isotope with a half-life of 3 hours. How many nuclei of that isotope will be left after 12 hours?
A)375
B)750
C)1500
D)3000

Question

Quizplus · Accepted Answer

After 3 hours, there will be 6000/2 = 3000 nuclei left.After 6 hours, there will be 3000/2 = 1500 nuclei left.After 9 hours, there will be 1500/2 = 750 nuclei left.After 12 hours, there will be 750/2 = 375 nuclei left.

Initially There Are 6000 Nuclei of an Isotope with a Half-Life