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Beta-minus decay — Edexcel GCSE Physics Definition | GradeGen

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Physics
Key terms
Beta-minus decay

GCSE Physics · key term

Beta-minus decay

Definition

A type of radioactive decay in which a neutron in an unstable nucleus changes into a proton and an electron is emitted.

Used by Edexcel

How each exam board covers it

Edexcel GCSE Physics · 1PH0

Specification 6.18 · Paper 1

Beta-minus decay, written β⁻ decay, occurs in an unstable nucleus.
Revise: Beta-minus Decay

Edexcel Physics past papers

Related key terms

Atomic number
Beta particle
Daughter nucleus
Mass number
Parent nucleus

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