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

Courses
Chemistry
Key Terms
Mass number (A)

GCSEEdexcel1CH0

Mass number (A)

Key term for Edexcel GCSE Chemistry, used in Atomic Structure.

Definition

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

Exam Context

Mass number (A) appears in Edexcel GCSE Chemistry revision content for Key Concepts in Chemistry, especially Atomic Structure and Isotopes.

Key Concepts in Chemistry Atomic Structure Isotopes

Found in Revision Notes

Key Concepts in Chemistry

Isotopes

Atomic Structure • Isotopes

Related Key Terms

Atomic number (Z)Electrons Isotopes Neutrons

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