The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

1. 

The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?
[A]. 1/6
[B]. 1/3
[C]. 1/8
[D]. 1/4

Answer: Option C

Explanation:

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