AQA A level Chemistry Paper 1, 2021 (first half) walkthrough

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AQA A level Chemistry Paper 1, 2021 (first half) walkthrough
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Hey Sir, what exactly is charge density and at 11:45, you said that Ca2+ has a lower charge density than Mg2+ but i thought it was the bigger molecule?
Sorry i’m just a little confused

steph
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why did you times 5 with 47.8 at 16:51

dominic