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6.3 Nuclear equations and decay

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Question 24

A daughter nucleus has 81 protons and 125 neutrons after one alpha decay. What were the atomic number and mass number of the parent nucleus?

[1]

atomic number $83$ ; mass number $208$

atomic number $85$ ; mass number $210$

atomic number $83$ ; mass number $210$

atomic number $79$ ; mass number $202$

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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