Note Values Will Change On Each Attempt On This Question Do Not Just Memorize Or Record Your Answer From The First Att 1 (20.47 KiB) Viewed 64 times
Note Values Will Change On Each Attempt On This Question Do Not Just Memorize Or Record Your Answer From The First Att 2 (20.62 KiB) Viewed 64 times
Note: Values will change on each attempt on this question. Do NOT just memorize or record your answer from the first attempt. What is the half-life (in years) for a radioactive isotope with a rate constant of 2.3 yr ¹? Do not enter units with your answer.
Which isotope in the list below is most likely to be used for medical purposes? O 85 Kr. t₁/2 = 11 years O 222 Rn, t1/25 -3.8 days O 60Co, t₁/2 = 5.3 years 90Sr, t1/2 = 28.8 years
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