Fluorine - 18 is a radioactive isotope that decays by positron emission to form oxygen - 18 with a half-life of 100 min. Physicians use ^(18)F for the study of brain by injecting a quantity of fluoro substituted glucose into the blood of a patient The glucose accummulates in the region where the brain is active and needs nourishment. If a sample of glucose that contains .^(18)F is injected into the blood what percentange will remain after 5 hours?

Fluorine - 18 is a radioactive isotope that decays by positron emissio

1.	Fluorine - 18 is a radioactive isotope that decays by positron emission to form oxygen - 18 with a half-life of 100 min. Physicians use ^(18)F for the study of brain by injecting a quantity of fluoro substituted glucose into the blood of a patient The glucose accummulates in the region where the brain is active and needs nourishment. If a sample of glucose that contains .^(18)F is injected into the blood what percentange will remain after 5 hours?
Answer» `12.5` 50 25 `6.25` ANSWER :A