The Half-Life of a Radioactive Element Is the Period of Time

question 17

Multiple Choice

The half-life of a radioactive element is the period of time required:

• A) to convert half of a given mass into radioisotopes.
• B) to extract one-half of the energy from the Earth's uranium supply.
• C) for one half of the total amount of a radioactive substance to change into a different material.
• D) for the sun to use up one-half of its available atomic resources.
• E) None of these

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