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Mass (nucleon) number (A) — Edexcel Physics Definition | GradeGen.AI

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Physics
Key Terms
Mass (nucleon) number (A)

GCSEEdexcel1PH0

Mass (nucleon) number (A)

Key term for Edexcel GCSE Physics, used in Decay and Equations.

Definition

The total number of protons and neutrons in the nucleus of an atom.

Exam Context

Mass (nucleon) number (A) appears in Edexcel GCSE Physics revision content for Radioactivity, especially Decay and Equations and Beta-plus Decay.

Radioactivity Decay and Equations Beta-plus Decay

Found in Revision Notes

Radioactivity

Beta-plus Decay

Decay and Equations • Beta-plus Decay

Related Key Terms

Antiparticle Atomic (proton) number (Z)Beta-plus (β+) decay Ionising power

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