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6.3 Nuclear equations and decay

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Question 12
F

Fluorine-18 is a radioactive isotope that decays by beta plus (β+\beta^{+}β+) decay to form an isotope of oxygen.

a.

Describe the change that happens in the nucleus during beta plus decay.

[2]
b.

Complete the nuclear equation for the decay of fluorine-18.

918F→□□O+□□e {}^{18}_{9}\mathrm{F} \rightarrow {}^{\square}_{\square}\mathrm{O} + {}^{\square}_{\square}\mathrm{e} 918​F→□□​O+□□​e
[3]
c.

Compare a positron with an electron.

[2]
Markscheme

6.3 Nuclear equations and decay Questions

  1. GCSE
  2. /Physics
  3. /6.3 Nuclear equations and decay

120 exam-style questions on Edexcel GCSE Physics 6.3 Nuclear equations and decay, covering 6.3.1 Beta-minus and beta-plus decay, 6.3.2 Effects of decay on the nucleus, and 6.3.3 Balancing nuclear equations. Each one has a worked solution and a mark scheme showing where the marks go.

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