Multiple Choice
A radioactive isotope undergoes decay by emission of a positron.After 2.00 h,6.650% of the initial amount of the isotope remains undecayed.What is the half-life of this isotope?
A) 45.0 min
B) 30.7 min
C) 90.0 min
D) 15.0 min
E) 60.0 min
Correct Answer:
Verified
Correct Answer:
Verified
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