The Half-Life of Technetium-99m Is 6 Hours

question 60

Multiple Choice

The half-life of technetium-99m is 6 hours. How many unstable atoms will remain after 12 hours?

• A) One sixth of the original amount.
• B) One fourth of the original amount.
• C) One third of the original amount.
• D) Half of the original amount.

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