alice_hartley
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#1
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Hi everyone,
I’m just starting a level ocr chemistry and I’m wondering if anyone has a sheet with all of the ion charges that need to be learnt on ?
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jsg9
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NO3^–, CO3^2–, SO4^2–, OH^–, NH4^+, Zn^2+, Ag^+, H^+, halides (e.g. Br^-, I^-), you have to be able to write formulae from names e.g. Iron(II) equates to Fe^2+, atoms of elements in group 1 form 1+ ions e.g. K^+, atoms of elements in group 2 form 2+ ions, e.g. Ca^2+. Pulled these from the spec and other bits I think will be helpful.

You'll see most of these so often that it becomes second nature.
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