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6.3 Nuclear equations and decay

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Question 13

A radium nucleus emits an alpha particle. Its daughter nucleus then emits gamma radiation and is left with 136 neutrons. How many neutrons were in the radium nucleus before either emission?

[1]
A

134134134

B

132132132

C

140140140

D

138138138

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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