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6.3 Nuclear equations and decay

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Question 32

A decay series starts with $90232Th{}^{232}_{90}\mathrm{Th}$ and ends with $82208Pb{}^{208}_{82}\mathrm{Pb}$ . Only alpha and beta-minus decays change the mass and atomic numbers. How many of each decay occur?

[1]

$6$ alpha decays and $8$ beta-minus decays

$4$ alpha decays and $6$ beta-minus decays

$8$ alpha decays and $6$ beta-minus decays

$6$ alpha decays and $4$ beta-minus decays

Markscheme

6.3 Nuclear equations and decay Questions

GCSE
Physics
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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