The Half-Life of Iodine-131 Is 8 Days

question 142

Multiple Choice

The half-life of iodine-131 is 8 days. If a patient is administered a 1,700-microgram dose of iodine-131 , how much iodine-131 will be in the patient's system after 8 days and after 22 days?

• A) 850 micrograms after 8 days; 265.1 micrograms after 22 days
• B) 850 micrograms after 8 days; 239.6 micrograms after 22 days
• C) 850 micrograms after 8 days; 252.7 micrograms after 22 days
• D) 850 micrograms after 8 days; 425 micrograms after 22 days
• E) 850 micrograms after 8 days; 258.5 micrograms after 22 days

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