The Half-Life of a Radioactive Material Is 4

question 4

Multiple Choice

The half-life of a radioactive material is 4.5 days.How many days are required for a sample,with an initial activity of 1.0 × 10⁵ Bq,to decay to an activity of 100 Bq?

• A)45 days
• B)36 days
• C)54 days
• D)31 days

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