Physics for IGCSE & O level - Atoms And Radioactivity (Section 2 - No. 7)
What happens to the nucleus during beta plus decay?
A proton becomes a neutron and a positron is emitted.
A neutron becomes a proton and an electron is emitted.
The mass number decreases by 4.
The atomic number decreases by 2.
Explanation
During beta plus decay, a proton is converted into a neutron, and a positron is emitted.
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