Sia
Question
Chemistry
Posted 8 months ago
The following graph shows three different radioisotopes decaying over a period of 10 seconds.
Which isotope has the shortest half-life?
Choose 1 answer:
(A) isotope A
(B) isotope B
(c) isotope C
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Answer from Sia
Posted 8 months ago
C
Key Concept
Half-life
Explanation
The isotope with the shortest half-life decays the fastest. In the graph, isotope C (blue line) drops sharply and levels out around 2% remaining at 4 seconds, indicating it has the shortest half-life.
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