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5.2.4a Half-life

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Question 12

The half-life of the radioactive isotope iodine-131 (53131I^{131}_{53}\text{I}53131​I) is 8 days8\text{ days}8 days.

Starting with 24 g of the isotope, which mass of the isotope remains after 24 days24\text{ days}24 days?

A

8.00 g8.00\text{ g}8.00 g

B

6.00 g6.00\text{ g}6.00 g

C

3.00 g3.00\text{ g}3.00 g

D

1.50 g1.50\text{ g}1.50 g

Markscheme

5.2.4a Half-life Questions

  1. IGCSE
  2. /Physics
  3. /5.2.4a Half-life

144 exam-style questions on CIE IGCSE Physics 5.2.4a Half-life. Each one has a worked solution and a mark scheme showing where the marks go.

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