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I believe I read somewhere that the hydration shell of ions always has hydrogen on the outside, but I can't relocate the exact whereabouts of this. Thus, I decided to ask here, as to what the arrangement of the water molecules around a anion is (is it both hydrogens pointed inwards to the ion or if one is facing outside, one is facing inside).

Sharky Kesa
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  • Maybe of interest: J. Phys. Chem. B, 2007, 111 (48), pp 13570–13577 DOI: 10.1021/jp075913v Also: Angew. Chem. Int. Ed. 2011, 50, 352 – 353 DOI: 10.1002/anie.201004501 http://139.30.122.11/paschek/PAPERS/DPRLAngewandteInt2011.pdf – Martin - マーチン Jul 26 '18 at 14:53
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    Also: Faraday Discuss. Chem. Soc., 1988,85, 137-146; 10.1039/DC9888500137; https://pubs.rsc.org/en/content/articlelanding/1988/dc/dc9888500137; And this: http://www1.lsbu.ac.uk/water/ion_hydration.html ; And this thesis: An ab initio study of ion solvation in water by Jasper Martijn Heuft http://www.science.uva.nl/research/its/molsim/Publications/thesis_heuft.pdf (<- look at Figure 1.5 and 1.6) – Martin - マーチン Jul 26 '18 at 15:16

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