Key term for Edexcel GCSE Chemistry, used in Group 0.
The average mass of an atom of an element compared to 1/12th of the mass of an atom of carbon-12.
Relative atomic mass (Aᵣ) appears in Edexcel GCSE Chemistry revision content for Groups in the Periodic Table, especially Group 0 and Pattern in Physical Properties.
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Key Concepts in Chemistry
Suggested Practicals • Empirical Formula Determination
