Chemistry (Combined Science) · IGCSE · Edexcel · Pearson Edexcel International GCSE Science (Double Award) — Chemistry (Modular) — 4XSD1 · Specification point · 1.15 · Principles of chemistry: Part 1 · Atomic structure
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| Learners should: |
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1.15 know the structure of an atom in terms of the positions, relative masses and relative charges of sub-atomic particles |