Physics (Combined Science) · GCSE · Edexcel · Edexcel GCSE Combined Science (1SC0) — Physics — Foundation · Specification point · 6.1 · Radioactivity
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| Students should: | Maths skills |
|---|---|
6.1 Describe an atom as a positively charged nucleus, consisting of protons and neutrons, surrounded by negatively charged electrons, with the nuclear radius much smaller than that of the atom and with almost all of the mass in the nucleus | 5b |