A Certain Radioactive Isotope Has a Half-Life of Approximately 1500

question 162

Multiple Choice

A certain radioactive isotope has a half-life of approximately 1500 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 70% of that amount?

• A) 2605 yr
• B) 772 yr
• C) 702 yr
• D) 450 yr

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