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GCSE Combined Science · key term
Radioactive decay in which a neutron changes into a proton and an electron is emitted from the nucleus.
Used by Edexcel
Paper 5, Paper 6
Revise: Nuclear decay mechanisms and equationsIn beta-minus decay, a neutron inside the nucleus changes into a proton, and an electron is produced and emitted. This electron is the beta-minus particle; it does not come from an electron shell.
The electron in beta-minus decay is produced in the nucleus, not emitted from an electron shell.
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