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6.3 Nuclear equations and decay

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Question 9

A radiation detector logs the decays in one branch of a decay series. The log records four alpha decays and three beta-minus decays.

How many fewer protons and how many fewer neutrons are in the final nucleus than in the nucleus at the start of the branch?

[1]

$5$ fewer protons and $11$ fewer neutrons

$8$ fewer protons and $11$ fewer neutrons

$8$ fewer protons and $8$ fewer neutrons

$11$ fewer protons and $5$ fewer neutrons

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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