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6.3 Nuclear equations and decay

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Question 1

A radiation monitor follows a decay chain in a sample of air. At the start, the nucleus being monitored contains 86 protons and 136 neutrons. The chain then produces two alpha particles and one beta-minus particle.

Which pair describes the nucleus remaining at the end of the chain?

[1]

mass number $214$ ; atomic number $83$

mass number $214$ ; atomic number $81$

mass number $218$ ; atomic number $85$

mass number $214$ ; atomic number $82$

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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