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Radioactivity

Radioactivity

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Question 44

Strontium-89 is a radioactive isotope that emits beta particles.

a.

The equation for this decay is

3889Sr→ZAY+−10e ^{89}_{38}\text{Sr} \rightarrow ^{A}_{Z}\text{Y} + ^{0}_{-1}\text{e} 3889​Sr→ZA​Y+−10​e

The atomic (proton) number for strontium-89 is

  • A 38
  • B 51
  • C 89
  • D 127
[1]
b.

The mass (nucleon) number, AAA, for Y\text{Y}Y is

  • A -1
  • B 38
  • C 39
  • D 89
[1]
c.

Strontium-89 is used in oncology to relieve bone pain caused by secondary bone tumors by accumulating in active bone tissue near the lesions.

Explain why strontium-89 is suitable for this treatment.

[3]
Markscheme

Radioactivity Questions

  1. IGCSE
  2. /Physics
  3. /Radioactivity

65 exam-style questions on Edexcel IGCSE Physics Radioactivity. Each one has a worked solution and a mark scheme showing where the marks go.

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