Which Proportion of a Radioactive Isotope Is Expected to Remain

question 10

Multiple Choice

Which proportion of a radioactive isotope is expected to remain in an unaltered (unreacted) state after the passage of three half-lives?

• A)one-third
• B)three-halves
• C)one-eighth
• D)one-sixth

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Definitions:

GDP

Gross Domestic Product, a total market value of all finished goods and services produced within a country in a given period.

Real GDP

The total value of all goods and services produced within a country's borders, adjusted for inflation, over a specific period.

Literacy

The ability to read and write at a level sufficient for communication and understanding of text.

Seasonality

Periodic fluctuations in economic or financial activity that recur with similar intensity during the same season of each year.