Which of the Following Radioisotope Would Be LEAST Likely to Be

question 59

Multiple Choice

Which of the following radioisotope would be LEAST likely to be used in a medical application?

• A) barium-131 (half-life = 11.6 days)
• B) iodine-131 (half-life = 8 days)
• C) technecium-99m (half-life = 6 hours)
• D) plutonium-239 (half-life = 2.4 × 10⁴ years)
• E) fluorine-18 (109 minutes)

---

Definitions:

Normal Good

A normal good is one whose demand increases when consumers' incomes increase and falls when incomes decrease, all else being equal.

Equilibrium Quantity

The quantity of a good or service at which supply and demand are balanced in a market.

Laptop Computers

Portable personal computers with the components, inputs, outputs, and capabilities of a desktop computer, designed for easy transport and use.

Note-Taking

The practice of recording information from various sources and contexts in a systematic way.