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5.2.4a Half-life

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Question 20

The half-life of the radioactive isotope tritium 13H^{3}_{1}\text{H}13​H is 12 years.

Starting with 40 g of the isotope, which mass of the isotope remains after 48 years?

A

10.0 g10.0\text{ g}10.0 g

B

5.00 g5.00\text{ g}5.00 g

C

2.50 g2.50\text{ g}2.50 g

D

1.25 g1.25\text{ g}1.25 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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