Chemistry (Combined Science) · GCSE · Edexcel · Edexcel GCSE Combined Science (1SC0) — Chemistry — Higher · Specification point · 1.23 · Key concepts in chemistry · Ionic bonding
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| Students should: | Maths skills |
|---|---|
1.23 Calculate the numbers of protons, neutrons and electrons in simple ions given the atomic number and mass number | 3b |