The Half-Life of a Radioisotope Is ________

question 48

Multiple Choice

The half-life of a radioisotope is ________.

• A)one-half of the time it takes for the radioisotope to completely decay to a nonradioactive isotope
• B)the time it takes for the radioisotope to become an isotope with one-half of the atomic weight of the original radioisotope
• C)the time it takes for the radioisotope to become an isotope with one-half the atomic number of the original radioisotope
• D)the time it takes for the radioisotope to lose one-half of its neutrons
• E)the time it takes for one-half of the sample to decay

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