21. Nuclear Chemistry
Radioactive Half-Life
10PRACTICE PROBLEM
Europium-152 has the potential to be used in external beam radiotherapy but is not yet developed for clinical use. Europium-152 has a half-life of 13.5 years. Assuming that europium also needs to be replaced when its activity drops to 75% of the original sample like in cobalt-60 machines, determine when will it be replaced if the machine is developed on January 2030.
Europium-152 has the potential to be used in external beam radiotherapy but is not yet developed for clinical use. Europium-152 has a half-life of 13.5 years. Assuming that europium also needs to be replaced when its activity drops to 75% of the original sample like in cobalt-60 machines, determine when will it be replaced if the machine is developed on January 2030.