After 3 half-lives, 125 grams of the parent isotope will remain.
Answer:
Letter C is the correct one
Chlorophyll is an example of a pigment.
I believe that the answer for this question would be option A. 8 HOURS. Based on the given scenario above about a certain radioactive isotope placed near a Geiger counter, the half-life <span>of the isotope 32 hours later would be 8 hours. Hope this is the answer that you are looking for. </span>
