Physics (Combined Science) · GCSE · Edexcel · Edexcel GCSE Combined Science (1SC0) — Physics — Foundation · Specification point · 6.4 · Radioactivity
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| Students should: | Maths skills |
|---|---|
6.4 Recall that the nucleus of each element has a characteristic positive charge, but that isotopes of an element differ in mass by having different numbers of neutrons | 2g 5b |