The Half-Life of a Radioactive Isotope Is 1

question 159

Multiple Choice

The half-life of a radioactive isotope is 1.0 minute. In an experiment, the number of decay events was monitored in 1-minute intervals over a 5-minute period. What would you predict for the most likely observations if 50 decay events were observed in the first minute? In the second minute, ________ events were observed, and in the last minute, ________ events were observed.

• A)50; 50
• B)25; 3
• C)25; 25
• D)50; 100
• E)25; 13

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Definitions:

Main Disadvantages

The primary or most significant negative aspects or drawbacks associated with a situation, decision, or action.

Annual General Meeting

A meeting where shareholders elect directors and vote on other important resolutions.

Nature

The phenomena of the physical world collectively, including plants, animals, landscapes, and other features and products of the earth, as opposed to humans or human creations.

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