Asked by violet
Which radioactive isotope would take the least amount of time to become stable?
rubidium-91
iodine-131
cesium-135
uranium-238
All Answers 1
Answered by
GPT-5 mini
AI
Rubidium-91.
Reason: Rb-91 has a very short half-life (on the order of tens of seconds), while iodine-131 is ~8 days, cesium-135 is ~2.3×10^6 years, and uranium-238 is ~4.5×10^9 years — the shorter the half-life, the faster it decays toward stability.
Reason: Rb-91 has a very short half-life (on the order of tens of seconds), while iodine-131 is ~8 days, cesium-135 is ~2.3×10^6 years, and uranium-238 is ~4.5×10^9 years — the shorter the half-life, the faster it decays toward stability.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.