Fluorine-18 Is a Radioactive Isotope Used as a Tracer Atom

question 79

Short Answer

Fluorine-18 is a radioactive isotope used as a tracer atom in drugs in the human body. How much fluorine-18 was originally used in a drug sample if there is only 0.124 mg left in a sample after 2.5 h? (The half-life of fluorine-18 is 110 minutes.)

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Definitions:

Calcium

A chemical element with the symbol Ca, which is essential for living organisms, primarily in cell physiology and bone formation.

Osteoporosis

A bone disease characterized by decreased bone density and mass, making bones fragile and more susceptible to fractures.

Vitamin E

A group of eight fat-soluble compounds with antioxidant properties, important for maintaining cell health.

Phosphorus

A chemical element vital for life, playing key roles in energy transfer, DNA and RNA structure, and bone formation.