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Originally Posted by devin
Hi!
I got a couple of qustions
1.Why does iodine disolve poorly in water?
2.what binds strongest with H2O-molecules
LI+ or K+
Mg2 + or S2-
Thanks in advance
DEVIN
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Basically it is due to its lower electronegativity (actually part of the reason it serves as a good nucleophile in SN2 reactions). Try finding a pic detailing how such anions are solvated by water (where is the positive charge motif in water?).
Basically, water dissolves small, compact ions better, especially if they are highly charged.
There's probably a more professional/sufficient explanation on this