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5.2.3a Radioactive decay

Which change takes place in the nucleus when it decays by beta-plus ( $β+\beta^+$ ) emission?

$proton→neutron+positron\text{proton} \rightarrow \text{neutron} + \text{positron}$

$neutron→proton+positron\text{neutron} \rightarrow \text{proton} + \text{positron}$

$proton+positron→neutron\text{proton} + \text{positron} \rightarrow \text{neutron}$

$neutron+positron→proton\text{neutron} + \text{positron} \rightarrow \text{proton}$

5.2.3a Radioactive decay Questions

120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.

Which change takes place in the nucleus when it decays by beta-plus ( $β+\beta^+$ ) emission?

$proton→neutron+positron\text{proton} \rightarrow \text{neutron} + \text{positron}$

$neutron→proton+positron\text{neutron} \rightarrow \text{proton} + \text{positron}$

$proton+positron→neutron\text{proton} + \text{positron} \rightarrow \text{neutron}$

$neutron+positron→proton\text{neutron} + \text{positron} \rightarrow \text{proton}$

120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.